W HENYOUCALL M ARK W ILLIAMS E NTERPRISESYOU ’ LLBEPUTINTOUCHWITHCONSCIENTIOUS , KNOWLEDGEABLEPERSONNEL . The history of Mark Williams Enterprises, Inc. can be traced back to the early 1960s, when the firm was found- ed as a race car chassis shop. The firm was responsible for building a large number of National event-winning cars in a variety of classes. MW got into the driveline components business out of necessity in the early '70s when available products did not meet Williams' high standards. Subsequently, MW introduced the industry's first guaranteed forged steel axle. As Williams devoted more time to developing new products, the firm evolved into a full-time manufacturing facility. By the mid-70s MW had stopped producing complete race cars, and offered the "kit car" for dragsters and funny cars. MW also has many handy tools, etc. for home race car builders. The end of complete car building at MW's marked the beginning of the most sophisticated computer controlled manufacturing facility for premium quality racing equipment. From its humble beginnings, MW Enterprises, Inc. has grown to become one of the indus- try's most progressive and respected manufacturers. An expansion in 1996 increased the MW facilities in the Colorado Technical Center, located in the Denver suburb of Louisville, to 32,000 square feet. With highly sophis- ticated computer controlled machining centers linked with networked production control, MW's shop is a text- book example of contemporary manufacturing efficiency. What's more, nobody has invested as much in dedicated equipment for building flange-type axles than Mark Williams. In addition to making a full line of premium quality products, MW has earned a reputation for provid- ing all customers, for over 40 years, with an exceptional- ly high degree of service. This extends all the way from initial sales assistance through diligent follow-through of orders. Our self sufficient philosophy combined with continued equipment investment is unparallel in the industry. The slogan, "Designed, tested and manufac- tured in house.... in the USA", is just our way of doing things. 800-525-1963 Toll Free Nationwide 303-665-6901 Inside Colorado 303-665-7021 24 Hour Fax ....“Although we are dedicating a great deal of time and energy to new products, we are keenly aware that the most important product we produce is customer satisfaction. We will continue to strive to meet your expectations, for we realize that the most important element in our business is YOU!” sales@markwilliams.com Monday-Friday 8:00 AM to 5:00 PM (MST) 765 S Pierce Ave Louisville, CO 80027on the webtoll free 800-525-1963 www.markwilliams.com 8.8 Ford Components . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 9” Ford Rears and Components . . . . . . . . . . . . . . . . .32-35 A-Arm Front End Materials Kit . . . . . . . . . . . . . . . . . . . . .79 Alignment Bar, Rear Housing and Chassis . . . . . . . .60, 86 Anti-Roll Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80 Axles, Hi- Torque & Truck, forged steel (rear) . . . . . .5-6, 10 Axle Stud kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9 Bearings, Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6 Brake System Components . . . . . . . . . . . . . . . . . . . . .65-66 Brakes, Front, Steel . . . . . . . . . . . . . . . . . . . . . . . . . . .60-61 Brakes, Rear, Steel and Carbon Fiber . . . . . . . . . . . .63-64 Brake Levers/Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81 Chassis Blueprints . . . . . . . . . . . . . . . . . . . . . . . . . . . .89-90 Chassis Tabs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84 Chromoly Tubing, Plate, and Tube Bends . . . . . . . . . . . .85 Chevrolet 12-bolt Rears and Components . . . . . . . . .39-41 Computer Pickup Assemblies . . . . . . . . . . . . . . . . . . . . . .74 Corvette Axle Kits and Componets . . . . . . . . . . . . . . .12-15 Couplers, Solid Splined Driveshafts, . . . . . . . . . . . . . . . .77 Crackel-Safe Driveline Disconects . . . . . . . . . . . . . . . . . .87 CV Axle Shafts and Components . . . . . . . . . . . . . . . .73, 87 Dana 60 Components . . . . . . . . . . . . . . . . . . . . . . . . .37-38 Driveshafts, steel, aluminum & carbon fiber . . . . . . . .67-70 Driveshaft Internal Slip, Mustang & Hellcat . . . . . . . . . . .70 Drive shafts, Dragster CV Joints . . . . . . . . . . . . . . . . . . .87 Dzus Buttons, Tabs, Springs . . . . . . . . . . . . . . . . . . . . . .84 Filler Caps and Bungs . . . . . . . . . . . . . . . . . . . . . . . . . . .58 Front Axles and Torsion Assemblies . . . . . . . . . . . . . .79-80 Full Floater Assemblies . . . . . . . . . . . . . . . . . . . . . . . .57-58 Gears, Ring and Pinions . . . . . . . . . . . . . . . . . . . . . .19-24 Gear Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 . M-W Corrosion Inhibitor . . . . . . . . . . . . . . . . . . . . . . . . . .27 Housing Ends and Retainers . . . . . . . . . . . . . . . . . . . . . .59 Housing Street Weld on End Kits . . . . . . . . . . . . . . . . . . .6 Installation Kits for Gear Sets . . . . . . . . . . . . . . . . . . .19-24 Jaguar XK Axle Hub Kits . . . . . . . . . . . . . . . . . . . . . . . . .15 Lug Nuts and Washers . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Labor Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 Master Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66 MasterLine Components . . . . . . . . . . . . . . . . . . . . . . . . . .88 Modular Axle Housings and Components . . . . . . . . . .44-56 Mopar Components (8 3/4) . . . . . . . . . . . . . . . . . . . . . . . .42 Morse Cables and Accessories . . . . . . . . . . . . . . . . . . . .82 Motor Plates and Clamps . . . . . . . . . . . . . . . . . . . . . . . . .84 Olds /Pontiac Components . . . . . . . . . . . . . . . . . . . . . . . .43 Off Road Driveline . . . . . . . . . . . . . . . . . . . . . . . . . . .10, 73 Pinion Depth Checker . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Pinion Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Posi-traction and Locker Units . . . . . . . . . . . . . . .33, 36. 37 Promotional Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90 Rear End Replacement Caps . . . . . . . . . . . .34, 36, 38, 41 Rod Ends,Tube Adaptors and Jam Nuts . . . . . . . . . . .82-83 Spindles, front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79 Steering Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79 Steering Wheels and Q/R Hubs . . . . . . . . . . . . . . . . . . . .78 Torsion and Anti-Roll Assemblies . . . . . . . . . . . . . . . .80-81 Thirdmembers Assemblies . . . . . . . . . . . . . . . . . . . . .27-29 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26,86 Tube Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83 Yokes, transmission and pinion . . . . . . . . . . . . . . . . . .71-73 T ERMS C.O.D. or Credit Card. Axles and special built products require a deposit as do items requiring shipment by methods other than UPS. Credit Card usage will expedite order processing. We accept money orders, certified checks or official bank checks only for C.O.D. orders. UPS will no longer accept cash for C.O.D. shipments. If a C.O.D. delivery is refused we will not ship C.O.D. on future orders; prepayment will be required. We accept Visa, Master Card, American Express and Discover. All credit card orders must be shipped to the billing address of the card only. A XLE O RDERING In the catalog there is a sample of the dimensions needed to place an axle order. Before phoning, read this carefully and familiarize yourself with the terminology and how measurements are to be taken. This will allow us to accurately complete your order, and lessen the chance of a costly mistake. S HIPMENTS F.O.B. Louisville, Colorado (Denver-Boulder Metro Area). Unless otherwise specified UPS will be utilized. F OREIGN S HIPMENTS Unless restricted by law, MW will ship to foreign customers. Full purchase price (in U.S. currency) must accompany order. No C.O.D. shipments. Name of desired freight carrier, and shipping method must be included with order. Unless specified UPS World Ship will be used. C LAIMS Claims for damages, open or concealed, or shortages must be made within five (5) days of receiving an order. Damage claims should be made with the freight company first and shortage claims with Mark Williams Enterprises. In the event of a damaged package, keep all packaging boxes and materials. All shipments are accurately weighed before shipping. If there is a part shortage check the shipment weight to see if it matches the shipping weight. This is the first step to determining if parts were lost in transit. R ETURNS Axles, driveshafts, housings and specially produced parts cannot be returned! Other merchandise requires permission and is subject to a 15% handling charge. Shipping charges on returned items must be prepaid. MWE does not allow returns after 90 days. O RDERING All orders are processed on an in-house computer. Customer numbers are generated from your zip code plus 2 computer assigned numbers. If possible, please use catalog part numbers and your customer number. Toll free order lines are open weekdays from 8:00 AM to 5:00 PM mountain time. Parts can be ordered 24 hours per day on line at www.markwilliams.com. B ACK O RDERS All back orders will be shipped as soon as the item is restocked. If a back order is no longer wanted please call 1-800- 525-1963 or 303-665-6901 and cancel the item(s). P RICES Prices are subject to change without notice. W ARNING Modification of your car’s chassis or driveline to enhance performance with the parts identified in this catalog may create a dangerous condition which could cause serious bodily injury. The buyer hereby expressly assumes all risks associated with any such modifications. D ISCLAIMEROF W ARRANTY Seller disclaims any warranty express or implied with respect to the parts sold hereby whether as to merchantability, fitness for particular purpose, or any other matter. S PECIFICATIONS Non-critical specifications are subject to change without notice. T ERMS &C ONDITIONS C ONTENTS Q UALITY - Whether you are in the market for axles, brakes, a driveshaft or chassis components you can rest assured that every part from Mark Williams Enterprises has been designed and manufactured to the highest standards. This includes researching the proper material and manufacturing processes (see below). MW quality is assured by performing designing, testing and manufacturing in-house, including heat treating and our high speed driveshaft balancing. C USTOMER S ERVICE - Mark Williams Enterprises provides unmatched customer service. From the time you place your order, through manufacturing, to shipping, everyone at Mark Williams Enterprises is committed to completing orders on time and to making sure that everything is right the first time. There are a couple of areas that help make this happen. First, MW sends a confirmation sheet, by fax. e-mail or UPS overnight letter, on all custom axle orders to verify dimensions. Second, MW components all have part numbers on them for trace ability and easy identification (custom axles have a serial number). T ECHNICAL A SSISTANCE - Mark Williams’ sales staff are some of the most knowledgeable in the industry and can help with just about any question you might have. We provide ordering and tech assistance on our toll free lines (800- 525-1963). You can also visit our full service website www.markwilliams.comany time to place an order or e-mail tech questions to sales@markwilliams.com. C OMMITMENT - For over Fifty Years we have strived to be a responsible company that supplies the best quality products. Our investment in testing and quality assurance equipment is unparallel in the hi-performance industries. We are committed to a continued process improvement program in an effort to supply you with the best products on the market. L EADINGTHE I NDUSTRY D ETAILS M AKETHE D IFFERENCE Axle Manufacturing The ability to produce a quality racing axle requires more than meets the eye. We have learned from our 50+ years that the improvement process never stops. We are constantly making improvements to assure that every axle produced incorporates the latest technology. Axles are our primary product and as such we have a considerable investment in dedicated CNC and other equipment for the production of race axles. In addition, Mark Williams Enterprises is the only company in the racing axle business that has both induction and thru hardening in-house heat treating capability. This allows us total control over the most important operation in the manufacturing process. One example of the details that make MW "Hi-Torque" axles superior is the CNC grinding of the axle flange face and bearing seat/shoulder with a freshly-dressed true radius grinding wheel. The radius at the bearing shoulder is the most critical part of an axle because it's the focal point of the bending moment (where the most force is concentrated). To insure the accuracy of this radius the grinding wheel is dressed prior to grinding each axle with CNC precision. By dressing the wheel for each axle it also eliminates the chance of embedded contaminants causing friction-induced surface cracks. MW's extra efforts in manufacturing pay huge dividends in reliability. A XLES S PLINES A key factor to consider when purchasing axles is the axle spline. Naturally, if the axles you are purchasing are to be mated to existing components you will need a similar replacement spline. Accordingly, MW manufactures axles with all popular spline configurations, including Dana 60, 12-bolt Chevy, 9" Ford, etc., plus splines compatible with after-market products from other manufacturers. If you have a choice of splines, as in the case of a new axle/spool combination, it is highly recommended that you utilize MW's special 35 or 40 spline. This is especially important since locked (spool-equipped) rear ends are subject to as much as twice the torsion load of standard open-type differentials. For most applications the MW 35 spline with a 1.500" diameter and 45 degree pressure angle is adequate. In comparative shear strength, the MW 35 spline is 61% stronger than the Chevrolet 12- bolt with 30 spline, 45% stronger than a 9" Ford with 31 spline, and even 3% stronger than the Dana 35 spline which has a 30 degree pressure angle. These calculations are based on the physical dimensions of the spline itself, and do not take into consideration the extra strength benefits of MW's Nickel Chromium Molybdenum alloy forging and austempering heat treating process. For those applications requiring maximum strength axles MW offers a big 1.708" diameter 45 degree pressure angle 40- tooth spline that is 51% stronger than the 35-tooth MW spline. Get the MW Hi-Torque axle with the spline that's best suited to your needs. P ART N UMBER T RACE A BILITY Every Mark Williams produced part carries a visible part number. Our part numbering system uses a revision letter at the end of the part number that indicates the design change. Example: A spool with part number 53133-H indicates there have been 8 changes to this part (A through H) since it was first introduced. Anytime a part is re-designed to the point it is would no longer be interchangeable with earlier versions, it is assigned a new part number. Parts that are produced from castings may have two revision letters. Our 9" thirdmember housing 57448 is on the U casting revision and the V machining revision, (at the time of this publication printing). This system allows trace- ability of our parts and can assist identifying the age of parts in the field. All axles and driveshafts are serialized allowing us to access the build information. Other parts have recorded production batch numbers that allow trace-ability. All raw materials used to produce MW products are certified from the mills and are traceable to the individual products. Spool or Axle Gear Profile Shaft Profile Pitch Diameter Circular Pitch Pressure Angle Clearance Involute Profile Minor Diameter (controls shaft strength) Major Diameteron the webtoll free 800-525-1963 www.markwilliams.com 8.8 Ford Components . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 9” Ford Rears and Components . . . . . . . . . . . . . . . . .32-35 A-Arm Front End Materials Kit . . . . . . . . . . . . . . . . . . . . .79 Alignment Bar, Rear Housing and Chassis . . . . . . . .60, 86 Anti-Roll Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80 Axles, Hi- Torque & Truck, forged steel (rear) . . . . . .5-6, 10 Axle Stud kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9 Bearings, Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6 Brake System Components . . . . . . . . . . . . . . . . . . . . .65-66 Brakes, Front, Steel . . . . . . . . . . . . . . . . . . . . . . . . . . .60-61 Brakes, Rear, Steel and Carbon Fiber . . . . . . . . . . . .63-64 Brake Levers/Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81 Chassis Blueprints . . . . . . . . . . . . . . . . . . . . . . . . . . . .89-90 Chassis Tabs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84 Chromoly Tubing, Plate, and Tube Bends . . . . . . . . . . . .85 Chevrolet 12-bolt Rears and Components . . . . . . . . .39-41 Computer Pickup Assemblies . . . . . . . . . . . . . . . . . . . . . .74 Corvette Axle Kits and Componets . . . . . . . . . . . . . . .12-15 Couplers, Solid Splined Driveshafts, . . . . . . . . . . . . . . . .77 Crackel-Safe Driveline Disconects . . . . . . . . . . . . . . . . . .87 CV Axle Shafts and Components . . . . . . . . . . . . . . . .73, 87 Dana 60 Components . . . . . . . . . . . . . . . . . . . . . . . . .37-38 Driveshafts, steel, aluminum & carbon fiber . . . . . . . .67-70 Driveshaft Internal Slip, Mustang & Hellcat . . . . . . . . . . .70 Drive shafts, Dragster CV Joints . . . . . . . . . . . . . . . . . . .87 Dzus Buttons, Tabs, Springs . . . . . . . . . . . . . . . . . . . . . .84 Filler Caps and Bungs . . . . . . . . . . . . . . . . . . . . . . . . . . .58 Front Axles and Torsion Assemblies . . . . . . . . . . . . . .79-80 Full Floater Assemblies . . . . . . . . . . . . . . . . . . . . . . . .57-58 Gears, Ring and Pinions . . . . . . . . . . . . . . . . . . . . . .19-24 Gear Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 . M-W Corrosion Inhibitor . . . . . . . . . . . . . . . . . . . . . . . . . .27 Housing Ends and Retainers . . . . . . . . . . . . . . . . . . . . . .59 Housing Street Weld on End Kits . . . . . . . . . . . . . . . . . . .6 Installation Kits for Gear Sets . . . . . . . . . . . . . . . . . . .19-24 Jaguar XK Axle Hub Kits . . . . . . . . . . . . . . . . . . . . . . . . .15 Lug Nuts and Washers . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Labor Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 Master Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66 MasterLine Components . . . . . . . . . . . . . . . . . . . . . . . . . .88 Modular Axle Housings and Components . . . . . . . . . .44-56 Mopar Components (8 3/4) . . . . . . . . . . . . . . . . . . . . . . . .42 Morse Cables and Accessories . . . . . . . . . . . . . . . . . . . .82 Motor Plates and Clamps . . . . . . . . . . . . . . . . . . . . . . . . .84 Olds /Pontiac Components . . . . . . . . . . . . . . . . . . . . . . . .43 Off Road Driveline . . . . . . . . . . . . . . . . . . . . . . . . . . .10, 73 Pinion Depth Checker . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Pinion Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Posi-traction and Locker Units . . . . . . . . . . . . . . .33, 36. 37 Promotional Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90 Rear End Replacement Caps . . . . . . . . . . . .34, 36, 38, 41 Rod Ends,Tube Adaptors and Jam Nuts . . . . . . . . . . .82-83 Spindles, front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79 Steering Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79 Steering Wheels and Q/R Hubs . . . . . . . . . . . . . . . . . . . .78 Torsion and Anti-Roll Assemblies . . . . . . . . . . . . . . . .80-81 Thirdmembers Assemblies . . . . . . . . . . . . . . . . . . . . .27-29 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26,86 Tube Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83 Yokes, transmission and pinion . . . . . . . . . . . . . . . . . .71-73 T ERMS C.O.D. or Credit Card. Axles and special built products require a deposit as do items requiring shipment by methods other than UPS. Credit Card usage will expedite order processing. We accept money orders, certified checks or official bank checks only for C.O.D. orders. UPS will no longer accept cash for C.O.D. shipments. If a C.O.D. delivery is refused we will not ship C.O.D. on future orders; prepayment will be required. We accept Visa, Master Card, American Express and Discover. All credit card orders must be shipped to the billing address of the card only. A XLE O RDERING In the catalog there is a sample of the dimensions needed to place an axle order. Before phoning, read this carefully and familiarize yourself with the terminology and how measurements are to be taken. This will allow us to accurately complete your order, and lessen the chance of a costly mistake. S HIPMENTS F.O.B. Louisville, Colorado (Denver-Boulder Metro Area). Unless otherwise specified UPS will be utilized. F OREIGN S HIPMENTS Unless restricted by law, MW will ship to foreign customers. Full purchase price (in U.S. currency) must accompany order. No C.O.D. shipments. Name of desired freight carrier, and shipping method must be included with order. Unless specified UPS World Ship will be used. C LAIMS Claims for damages, open or concealed, or shortages must be made within five (5) days of receiving an order. Damage claims should be made with the freight company first and shortage claims with Mark Williams Enterprises. In the event of a damaged package, keep all packaging boxes and materials. All shipments are accurately weighed before shipping. If there is a part shortage check the shipment weight to see if it matches the shipping weight. This is the first step to determining if parts were lost in transit. R ETURNS Axles, driveshafts, housings and specially produced parts cannot be returned! Other merchandise requires permission and is subject to a 15% handling charge. Shipping charges on returned items must be prepaid. MWE does not allow returns after 90 days. O RDERING All orders are processed on an in-house computer. Customer numbers are generated from your zip code plus 2 computer assigned numbers. If possible, please use catalog part numbers and your customer number. Toll free order lines are open weekdays from 8:00 AM to 5:00 PM mountain time. Parts can be ordered 24 hours per day on line at www.markwilliams.com. B ACK O RDERS All back orders will be shipped as soon as the item is restocked. If a back order is no longer wanted please call 1-800- 525-1963 or 303-665-6901 and cancel the item(s). P RICES Prices are subject to change without notice. W ARNING Modification of your car’s chassis or driveline to enhance performance with the parts identified in this catalog may create a dangerous condition which could cause serious bodily injury. The buyer hereby expressly assumes all risks associated with any such modifications. D ISCLAIMEROF W ARRANTY Seller disclaims any warranty express or implied with respect to the parts sold hereby whether as to merchantability, fitness for particular purpose, or any other matter. S PECIFICATIONS Non-critical specifications are subject to change without notice. T ERMS &C ONDITIONS C ONTENTS Q UALITY - Whether you are in the market for axles, brakes, a driveshaft or chassis components you can rest assured that every part from Mark Williams Enterprises has been designed and manufactured to the highest standards. This includes researching the proper material and manufacturing processes (see below). MW quality is assured by performing designing, testing and manufacturing in-house, including heat treating and our high speed driveshaft balancing. C USTOMER S ERVICE - Mark Williams Enterprises provides unmatched customer service. From the time you place your order, through manufacturing, to shipping, everyone at Mark Williams Enterprises is committed to completing orders on time and to making sure that everything is right the first time. There are a couple of areas that help make this happen. First, MW sends a confirmation sheet, by fax. e-mail or UPS overnight letter, on all custom axle orders to verify dimensions. Second, MW components all have part numbers on them for trace ability and easy identification (custom axles have a serial number). T ECHNICAL A SSISTANCE - Mark Williams’ sales staff are some of the most knowledgeable in the industry and can help with just about any question you might have. We provide ordering and tech assistance on our toll free lines (800- 525-1963). You can also visit our full service website www.markwilliams.comany time to place an order or e-mail tech questions to sales@markwilliams.com. C OMMITMENT - For over Fifty Years we have strived to be a responsible company that supplies the best quality products. Our investment in testing and quality assurance equipment is unparallel in the hi-performance industries. We are committed to a continued process improvement program in an effort to supply you with the best products on the market. L EADINGTHE I NDUSTRY D ETAILS M AKETHE D IFFERENCE Axle Manufacturing The ability to produce a quality racing axle requires more than meets the eye. We have learned from our 50+ years that the improvement process never stops. We are constantly making improvements to assure that every axle produced incorporates the latest technology. Axles are our primary product and as such we have a considerable investment in dedicated CNC and other equipment for the production of race axles. In addition, Mark Williams Enterprises is the only company in the racing axle business that has both induction and thru hardening in-house heat treating capability. This allows us total control over the most important operation in the manufacturing process. One example of the details that make MW "Hi-Torque" axles superior is the CNC grinding of the axle flange face and bearing seat/shoulder with a freshly-dressed true radius grinding wheel. The radius at the bearing shoulder is the most critical part of an axle because it's the focal point of the bending moment (where the most force is concentrated). To insure the accuracy of this radius the grinding wheel is dressed prior to grinding each axle with CNC precision. By dressing the wheel for each axle it also eliminates the chance of embedded contaminants causing friction-induced surface cracks. MW's extra efforts in manufacturing pay huge dividends in reliability. A XLES S PLINES A key factor to consider when purchasing axles is the axle spline. Naturally, if the axles you are purchasing are to be mated to existing components you will need a similar replacement spline. Accordingly, MW manufactures axles with all popular spline configurations, including Dana 60, 12-bolt Chevy, 9" Ford, etc., plus splines compatible with after-market products from other manufacturers. If you have a choice of splines, as in the case of a new axle/spool combination, it is highly recommended that you utilize MW's special 35 or 40 spline. This is especially important since locked (spool-equipped) rear ends are subject to as much as twice the torsion load of standard open-type differentials. For most applications the MW 35 spline with a 1.500" diameter and 45 degree pressure angle is adequate. In comparative shear strength, the MW 35 spline is 61% stronger than the Chevrolet 12- bolt with 30 spline, 45% stronger than a 9" Ford with 31 spline, and even 3% stronger than the Dana 35 spline which has a 30 degree pressure angle. These calculations are based on the physical dimensions of the spline itself, and do not take into consideration the extra strength benefits of MW's Nickel Chromium Molybdenum alloy forging and austempering heat treating process. For those applications requiring maximum strength axles MW offers a big 1.708" diameter 45 degree pressure angle 40- tooth spline that is 51% stronger than the 35-tooth MW spline. Get the MW Hi-Torque axle with the spline that's best suited to your needs. P ART N UMBER T RACE A BILITY Every Mark Williams produced part carries a visible part number. Our part numbering system uses a revision letter at the end of the part number that indicates the design change. Example: A spool with part number 53133-H indicates there have been 8 changes to this part (A through H) since it was first introduced. Anytime a part is re-designed to the point it is would no longer be interchangeable with earlier versions, it is assigned a new part number. Parts that are produced from castings may have two revision letters. Our 9" thirdmember housing 57448 is on the U casting revision and the V machining revision, (at the time of this publication printing). This system allows trace- ability of our parts and can assist identifying the age of parts in the field. All axles and driveshafts are serialized allowing us to access the build information. Other parts have recorded production batch numbers that allow trace-ability. All raw materials used to produce MW products are certified from the mills and are traceable to the individual products. Spool or Axle Gear Profile Shaft Profile Pitch Diameter Circular Pitch Pressure Angle Clearance Involute Profile Minor Diameter (controls shaft strength) Major Diameteron the webtoll free 1 800-525-1963 www.markwilliams.com Mark Williams Exclusive! MW has created a special form to verify all custom axle orders. Within two days of placing your order you will receive a letter, e-mail or fax a confirmation form that shows exactly what is being manufactured. If there are any questions or discrepancies, please contact the MW sales department immediately. For those racers who need axles in a big hurry, Mark Williams Enterprises offers priority service for a nominal extra charge. Axles purchased under these terms are guaranteed to ship within 5 WORKING DAYS for an additional charge of $100.00 Service 1. A REALLAXLESWITHSIMILARSPLINECOUNTSINTERCHANGEABLE ? No! For example, an OEM 35-spline Dana axle and a special MW 35 spline axle are not interchangeable because the MW spline features a 45-degree pressure angle, which differs from stock Dana 30-degree configuration. Mark Williams does, however, offer Hi-Torque forged steel axles with OEM type splines. Please read additional spline text on page 3. 2. W HYDO MW H I -T ORQUEAXLESHAVEAREDUCEDDIAMETERAFTERTHE SPLINE ? In order for a splined shaft to carry its maximum torsional load it is necessary to have a working shaft diameter smaller than the major spline diameter. The reduced section after the spline works in the same manner as a torsion bar allowing the rotational wind up to occur over a longer area. This prevents the axle from experiencing permanent set. Axles that are not undercut will twist at the end of the spline engagement and eventually fail at this point. 3. W HATTYPEOFAXLERETENTIONISREQUIRED ? Most race-sanctioning organizations require some type of positive retention. The OEM C-clip does not meet these requirements. Accordingly, MW offers a special C-clip eliminator kit to provide the necessary retention. However, it is advisable to change to weld-on housing ends if your plans call for narrowing the axle housing. MW can supply weld-on ends, with oversize bearings and retainers for most popular brake applications. 4. W HYISTHESPLINEAREAON MW AXLESSHORTERTHANOTHERS ? Most manufacturers do not make custom axles for each order. Instead, they gang-run axles in certain lengths and make them with very long splines. When an order comes in, they simply cut off the excess spline. MW axles are manufactured to the correct length to insure 100% engagement in the spool spline. Excessive unused spline length reduces the torsional capability of an axle. 5. S HOULD I GET 35 OR 40- SPLINEAXLE - SPOOLCOMBINATION ? For many applications the 1.500" diameter 35-tooth special MW spline axles are more than adequate. For "bulletproof" reliability there's no question the 40-spline setup is preferred. We've found these big 1.708" diameter axles to also prolong housing life and wheel alignment because of their ability to handle increased torsion as well as bending (toe in) loads. If your rear end will accept a 40 spline spool we recommend using it. 6. W HYARE MW AXLESSHORTERTHANMY “ OLD ” ONES ? This question is often asked by customers who replace an OEM axle/differential or another brand axle/spool combination with a MW setup. The reason is that the spline location in most MW spools is positioned further outboard to allow a larger spline. As a result, the axles can be shorter and as an added bonus are slightly lighter. 7. I SA 3-1/4” BORE 9” F ORDCASENEEDEDTORUN 35 SPLINEAXLES ? Not with MW axles. Unlike our competitors, we manufacture a 35 spline spool that fits in the stock 9” Ford cases (2.893” or 3.062” bore). MW spools have been designed to position the splines at the outboard end of the spool on both sides. This is an exclusive MW feature that has been used for over 30 years. This same feature applies to 10 and 12-bolt G.M. spools which are also limited to stock carrier bearing sizes. 8. W HYDO I SEEAXLESADVERTISEDAS “A LLOY A XLES ” SOCHEAP ? These axles are actually produced by an OEM axle forging company whose main business is making axles for the truck and construction industry. The material used is a carbon steel, common to OEM axles. It is not usually regarded as an alloy steel as advertised. The manufacturer produces the axle blank and the advertiser cuts the axle to length and splines it. These axles are made from the same material as stock axles and receive the same heat treatment. The only difference is that they are available in shorter lengths and with different splines. 9. W HICH H OUSING E ND S HOULD I USE ? We recommend choosing the ends to match the brakes you want to use. If you are going to use disc brakes we recommend the symmetrical housing ends. This will allow the best designed Disc Brake kit and eliminates confusion about wheel stand outs. We do not recommend using the small Ford housing ends. The wheel bearing is too small and delicate. Q UESTIONS &A NSWERS W ARRANTY &S ERVICES M ARK W ILLIAMS E NTERPRISES , I NC . war- rants against breakage of our special 35 or 40-spline spool combination axles for a period of five years. UNDER NO CIRCUMSTANCES WILL MARK WILLIAMS ENTERPRISES, INC. BE HELD RESPONSI- BLE FOR INCIDENTAL OR CONSEQUENTIAL DAM- AGES ARISING FROM OR IN CONNECTION WITH, THE INSTALLATION OR USE OF ANY M-W PROD- UCT. This warranty shall not apply to any product which has been improperly installed, or repaired in any manner which affects the strength of the axle or any axle that has been involved in an upset or colli- sion, including welding lock rings on axles, Warranty applies for drag racing applications only. Any other application not covered. A XLE C ONFIRMATION PRIORITY-2 A - Housing flange to flange B - Driver side housing flange to pinion center C - Passenger side housing flange to pinion center D - Axle flange to axle flange width E - Axle flange (driver’s side) to pinion center F - Axle flange (passenger side) to pinion center G - Axle flange to housing flange (brake stand-out) H -Flange to bearing seat I - Bearing journal diameter J - Flange diameter K - Brake drum register L - Seal diameter (optional) M - Overall axle length (right & left) N - Driver side spline relief O - Passenger side spline relief P - Bolt Circle Q - Cord measurement between two studs Every set of Mark Williams axles are custom built to meet each customer’s requirements. This requires accurate information to insure that the axles are a perfect fit. You will need to provide as many of the dimensions shown as possible for your application. A simplified version of this order form can be downloaded from www.markwilliams.com, click > Service Bulletins, click > SB0077.pdf. H OW T O O RDER A XLES A B C E F D G J K H L I M O N SPLINES P Q S TARTINGFROM S CRATCH The following steps have proven to be the most accurate method for determining the width of the rear end assembly when building a new car. 1) Obtain a set of the widest tires and wheels (with appropriate offset) to be used. 2)Remove the stock rear end housing and make modifications to inner fender wells as required. 3) Position the tires/wheels under the car, and through the use of jack stands, etc. place the car in the desired running attitude. 4)With wheels in position, measure from wheel mounting surface to the opposite wheel mounting surface. This will give you the proper axle flange to axle flange dimension (D). Allow for brake hats or drums. 5) Also supply the (E & F) distance or indicate if the pinion is centered or the amount of pinion offset required and the direction. Offset toward the passenger side is normal and toward the driver side is abnormal. M EASURINGAN E XISTING H OUSING Measure the distance to the outside of both housing flanges (A). Not all pinions are centered, so it is also essential to measure the distance from the housing flange to the center of the pinion on both driver and passenger side (B & C). M EASURING E XISTING A XLES Provide as many measurements as possible. Use of a MW 35 or 40 spline spool will change axle lengths in relation to axles with stock splines. A Mark Williams salesman can help with questions about changes in axle lengths. S POOLS All spools are not manufactured the same. If the spool to be used is a MW spool, the part number on the spool will give us the required information. If the spool is from another manufacturer, please check the spline count and location of the spline as measured in the illustration above (N & O values). B OLT C IRCLE If you do not know the bolt circle (P value) of a 5- bolt application, measure the center-to-center distance (Q) between two adjacent wheel studs and reference the table below. 4-1/2” B.C. = 2.645” normal later Ford pattern 4-3/4” B.C. = 2.792” normal Chevrolet pattern 5” B.C. = 2.939” normal older Olds-Pontiac 5-1/2” B.C. = 3.233” normal early Ford and T/F wheel patternon the webtoll free 3 800-525-1963 www.markwilliams.com 56003 Mopar Non-Adjustable Axle Bearings (pr) . .111.71 2.875” O.D., 1.562” I.D. for stock ends w/spiral lock. 57803 Small Ford Axle Bearings(pr) . . . . . . . . . . . . .91.55 2.835”stock O.D. with larger than stock 1.562” I.D. stock Mustang end. 58503 Axle Bearings, 1-17/32” (pr) . . . . . . . . . . . . .86.60 Sealed bearings 3.150” O.D.,1.532” I.D. stock Ford/Olds size. 58504 Axle Bearings, 1-5/8” (pr) . . . . . . . . . . . . . . .104.00 Sealed bearings 3.150’’ O.D.,1.625” I.D. used for C-Clip eliminator. 58505 Axle Bearings, 45 mm (pr) . . . . . . . . . . . . . .114.00 Sealed bearings 3.150” O.D., 1.774” I.D. used for 40 spline axles CB-58505 Axle Bearings, 45 mm (pr) . . . . . . . . . . . .546.00 Ceramic bearings, Sealed bearings 3.150” O.D., 1.774” I.D. 58507 Axle Bearings, 1-9/16”(pr) . . . . . . . . . . . . . . .98.77 Sealed bearings 3.150” O.D., 1.564” I.D. 58508 Axle Bearings, 3.347 X 45 mm, wide (pr) . .303.00 Double row sealed ball bearings 3.347” O.D., 45 mm I.D. For 58595/ 58598 Heavy Duty Symmetrical ends (o-ring is in housing end). 58509 Axle Bearings, 3.347 45mm I.D. narrow (pr)217.54 Narrow bearing for 58599 Symmetrical Pro-Stock ends. 58519 Axle Bearings.3.347 x 45mm, wide (pr) . . . .300.75 Wide single row bearings for deep 58595/58598 Heavy-Duty ends. CB-58509 Axle Bearings,3.347 x 45mm (pr) . . . . . .624.48 Ceramic bearings, narrow, for 58599 Symmetrical Pro-Stock ends MW drag race axle bearings are special size ball and roller bearings. Many feature an "O" ring seal around the outside of the bearing. These are designed to utilize our wide selection of mating housing ends that will allow largest inside diameter, increasing the axle strength. Our technical representative can recommend the best bearing/housing end combination based on your brake requirements. D RAG R ACE A XLE B EARINGS H I -T ORQUE A XLES MW S TANDARD “HI -TORQUE” A XLES : MW standard forged steel axles have set the quality standard in the industry for racing axles. The standard axles will normally be used in applications where weight is not a large factor for your car. The standard axle is the heavy duty version in the MW "Hi-Torque" axle line. Each MW axle order is custom manufactured per application with all axles designed to accept an axle bearing with the largest diameter possible for the particular housing end being used, then each axle shaft is tapered from bearing journal to spline. This combination of the large bearing diameter and tapered shaft increases torsion and bending capacity. All Mark Williams "Hi-Torque" axles are available in any spline and bearing combination with the bolt pattern or patterns of your choice and either 1/2" or 5/8" tapped stud holes. Dual patterns available without an extra charge. Flange lightening option available on standard axles for an additional charge. (weight 32 lbs*) 50100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .696.00 pair S UPERLIGHT 35 S PLINE "HI-TORQUE" A XLES : Rears that are limited to 35 spline spools can take advantage of MW 35 spline gun drilled axles. These axles are pocket lightened and "gun drilled" where the center of the axle shaft is bored (11/16" dia.) the entire length to resemble a gun barrel. This process is performed in house and allows us to control the bore finish assuring a quality product. This results in a superior product, fully capable of handling the shock loads of the heavier Super Stock cars that are limited to 35 splines! These operations result in a weight savings of roughly 19% over a pair of standard 35 spline MW "Hi-Torque" axles. (weight saving is 6.88 lbs on a pair of 35 spline 24” long axles) 50550 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .798.00 pair S UPERLIGHT 40 S PLINE “HI-TORQUE” A XLES : The next step in the high strength light weight axles would be the Mark Williams SUPERLIGHT 40 spline “Hi- Torque” axles. In an effort to reduce rotating and un-sprung weight, these axles have been gun drilled to a 7/8” bore along with extensive milling of the axle flanges. This in conjunction with the additional machining behind the MW name plate and revised axle profile, result in a weight savings of approximately 35% over the standard MW axles. 40 spline axles are recommended for all race cars that can utilize a 40 spline spool . (19.9 lbs*) 50500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .853.00 pair U LTIMATE “HI-TORQUE” A XLES : It doesn’t get any better than this. The MW ULTIMATE “Hi-Torque” axles represent the latest in axle and material technology. The axle profile and flange lightening are carried over from the SUPERLIGHT axles. The use of aircraft 300M alloy forgings make it possible to enlarge the diameter of the gun drill bore to 1” diameter without sacrificing strength. This represents a savings of 2.6 pounds per pair! You won’t find lighter axles. Anywhere!!! (weight 17.3 lbs*) 50800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1252.50 pair 5600358508 5850558504 58503 57803 CB-58509 58519 58509 58507 * Axle weights are per pair for 40 spline axles less bearings and studs to fit a 31” wide housing. 4 The preferable method to obtain a reliable axle and bearing combination for Pro Street applications is the installation of our weld-on housing ends. MW has designed ends that accept the 45 mm bore Timken® bearing and a heavy-duty seal. A slightly bent housing can be corrected when installing new Pro Street weld-on ends. A variety of kits are available that accommodate the most popular brakes. If you are going to use disc brakes we recommend using the 58780 Symmetrical end kit that accepts the best designed brake kits and can incorporate a parking brake 58780 Housing End Kit, Disc Brakes . . . . . . . . . . . . .421.00 For use with MW Disc Brake Kits with symmetrical bolt pattern. Includes Timken® wheel bearings, seals and backing plate bolts. 66700 Housing End Kit, Mopar Brakes . . . . . . . . . . .436.89 For Mopar brakes. Includes Timken® bearings, retainers, seals and backing plate bolts. 67700 Housing End Kit, Small Ford . . . . . . . . . . . . . .435.07 For small Ford brakes. Includes Timken® bearings, retainers, seals and backing plate bolts 67750 Housing End Kit, Large Ford . . . . . . . . . . . . . .476.98 For large Ford brakes (w/1/2” bolts). Includes Timken® bearings, retainers, seals and backing plate bolts. 68700 Housing End Kit, Small GM . . . . . . . . . . . . . . .477.00 For GM small brakes (Camaro, Chevelle, Nova). Includes Timken® bearings, retainers, seals and backing plate bolts. 67870 Housing End Kit, New Style Ford . . . . . . . . . .447.00 For New Style Ford. Includes Timken® bearings, retainers, seals and backing plate bolts.. MW’s Pro Street axle bearing features a large 45mm (1.774”) I.D. and is unique in that it can take thrust in either direction. This tapered roller bearing exceeds the radial capacity of common O.E.M. ball and roller bearings. Axle bearing assembly includes bearings, seals and MW produced press on bearing lock rings. Requires matching MW housing ends. 58506S Unit Axle Bearing Assembly (pr) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .256.00 For MW Pro Street Axles, Timken® unit bearings with seals and press on lock rings. MW Hi-Torque Pro Street axles are custom built per order and are manufactured from the same Tri-Alloy forgings as our drag race axles, featuring 45mm bearings and thicker flanges for street use. 50400 Pro Street Axles, (pr) . . . . . . . . . . . . . . . . . .696.00 For use with any MW weld-on or bolt-on end kits on this page that incorporate the heavy-duty Timken® unit bearings For those performance enthusiasts building sophisticated “Pro Street” type vehicles with narrowed rear ends, MW offers premium quality driveline components engineered specifically for daily street use, not “after market OEM” type axles. These are designed for those who want the BEST custom-made axles money can buy. MW “Pro Street” axles overcome the problem commonly encountered when using OEM or drag-type units: flange breakage. In fact, Mark Williams warrants each axle flange against breakage for two years when used in conjunction with a MW Pro Street housing end kit with Timken® 45mm bearings. Increasing axle shaft diameter and flange strength are critical factors when deciding on axles for high powered street machines (which often weigh more and operate on more harsh surface conditions than their race-only cousins). Add serious muscle to any heavy street machine and you can bet the OEM driveline can’t provide the necessary reliability. Why settle for anything less than premium quality MW components? P RO S TREET C OMPONENTS P RO S TREET A XLES P RO S TREET A XLE B EARINGS W ELD - ON H OUSING E ND K ITS 68700 Weld-On Housing Kit for GM 10 & 12 Bolt Ends 58506Son the webtoll free 5 800-525-1963 www.markwilliams.com 187S-35C 35 spline, Locker, 9” 3.25 Ford Case ................................854.00 Requires 3.250 or 3.812 bore case. 225S-40A 40 spline, Locker, Dana 60™ 3.73-4.10 Ratio...................699.00 225S-40B 40 spline, Locker, Dana 60™ 4.56-7.17 Ratio...................699.00 P RO S TREET L OCKERS MW bolt-on retainer kits allow you to easily use MW “Pro-Street” axles in G.M. and Ford rear end housings without replacing housing ends. All bolt-on kits utilize a heavy duty Timken® unit bearing that can take thrust from either direction and exceeds radial and axial load capacity of common ball and roller bearings. Bolt-on ends are recommended if housing can not be narrowed. Weld-on kits should be used rather than this kit, when narrowing a housing. 67760 Bolt-On Adapter Kit, Large Ford . . . . . . . . . . . .286.90 Allows the use of 50400 MW Pro Street Axles without changing the stock housing end. Must have large Ford ends with 3.150” O.D. bearings, 1/2” backing plate bolts. Includes bearings & seals. 67770 Bolt-On Adapter Kit, New Style Ford . . . . . . . . .312.06 Allows the use of 50400 MW Pro Street Axles without changing the stock housing end. Must have New style large Ford ends with 3.150” O.D. bearings, 3/8” backing plate bolts. 3 9/16” x 2” pattern. Includes bearings & seals. 68800 Wheel Bearing Adapter Kit, Small GM . . . . . . .374.76 Allows the use of 50400 MW Pro Street Axles without changing the stock housing end. Must have GM small car brake (Camaro,Chevelle, Nova). Includes bearings & seals should be used when narrowing housing. B OLTON R ETAINER K ITS 67760 187S-35C MW offers a Locker type differential that accepts larger than stock spline 1.5" diameter 35-spline axles for the 9" Ford rears. Axles must be manufactured s pecifically for this Locker. The spline and length are different from the MW spool spline. We also offer a 40 spline locker for the Dana 60™ rears. The spline and location is the same as the MW 40 spline spool axles. 68800 225S-40A 58514 Housing End Seal for 1.625 dia. Axle . . . . . . .16.89 58515 Housing End Seal for 1.774 dia. Axle . . . . . . .17.25 58516 Housing End Seal for 1.562 dia. Axle . . . . . . .16.65 58570 Backing Plate Bolt Kit (set of 8) . . . . . . . . . . .39.00 3/8” with nuts for MW housing ends (except large old style Ford 58570A Backing Plate Bolt Kit (set of 10) . . . . . . . . . .41.25 For Mopar type ends that require 10 bolts. 58572 Housing End Stud Kit (set of 8) . . . . . . . . . . .51.00 3/8” studs, nuts and washers for Pro Mod housing ends or MW modular end bells. 58575 Backing Plate Bolt Kit (set of 8) . . . . . . . . . . .35.00 1/2” with nuts for large Ford ends An Exclusive benefit of using MW Housing ends is the ability to utilize a inboard seal. No more fighting with leaking wheel bearing by installing these seals. MW offers 3 different inner axle seals for all MW 2” long housing ends. These seals are designed to ride on the axle shaft just inboard of the axle bearing lock ring. MW stocks both 3/8” and 1/2” backing plate bolt kits as well as the stud kit required for the HD housing ends. 3/8” bolts feature quick start ends with serrations under the heads to hold them securely in the housing ends. 1/2” size are special modified fasteners. All kits also include self locking nuts. H OUSING E ND S EALSAND B ACKING P LATE B OLT K ITS 58515 5851458516 58572 58570585756 MW offers 1/2-20 screw-in wheel studs in two standard lengths. The latest MW 2" and 3" studs feature a special thin 12 point head to help with brake component clearance. The stud features and a small quick start on the threaded end. The G.N. wheel studs are made of 8740 aircraft quality material with 5/8-18 threads and they also have a quick start end. All stud kits include aircraft washers to help prevent the threads from wedging on the imperfect threads by the head. Reduce rotating weight with the addition of a titanium stud kit. All studs are carefully manufactured to insure concentricity with the stud threads. All kits include titanium studs, self locking jam nuts, and choice of MW hard anodized aluminum lug nuts (51520 or 51521). 41540 Titanium Drive Studs 11/16” dia . . . . . . . . . . . . .462.00 A=2-11/16” B=1.00” C=7/8”. Save 1.2 lb (Specify nut) 41560 Titanium Drive Studs 11/16” Dia . . . . . . . . . . . . .473.00 A=4” B=1 3/16” C=2” Save 1.2 lb (Specify nut) 41580 Titanium Drive Studs 11/16” Dia . . . . . . . . . . . . .462.00 A=2-7/8” B=7/8” C=1-3/16” Save 1.2 lb (Specify nut) 51500 Drive Studs 11/16” dia. (complete set) . . . . .154.00 A=3-1/2” B=1-3/16” C=1-1/2” D=13/16” 51540 Drive Studs 11/16” dia. (complete set) . . . . .154.00 A=2-11/16” B=1” C=7/8” D=13/16” 51560 Drive Studs 11/16” dia. (complete set) . . . . .154.00 A=4” B=1-3/16” C=2” D=13/16” 51580 Drive Studs 11/16” dia. (complete set) . . . . .154.00 A=2-7/8” B=7/8” C=1-3/16” D=13/16” 51590 Drive Studs 11/16” dia. (complete set) . . . . .154.00 A=3-7/16” B=7/8” C=1-3/4” D=13/16” Drive Stud Kit w/ MW Aluminum Lug Nuts . . . . . . . .250.80 Add “A” to Part Number (specify c-bore depth1/8 or 3/8”). W HEEL S TUD K ITS MW drive studs are recommended in all drag racing applications using after-market wheels. The Drive Stud is designed so the 11/16” dia. shoulder on the stud is used to center the wheel, rather than the lug nut used with smaller studs. This system dramatically increases shear strength and eliminates bent wheel studs. MW drive studs require a 5/8”-18 thread holes in the axle flange. Studs are then secured in the flange with a jam nut. Wheels are held in place with an open end flanged lug nut and an aluminum washer that prevents marring the wheel. A standard MW drive stud kit comes complete with 10 steel drive studs, 10 self locking jam nuts, 10 aluminum washers, (specify thickness) and 10 steel Snap-Lock™ flanged lug nuts. Titanium drive studs are also available and listed below. The following page has lug nut options available at an additional cost. For applications using OEM steel wheels MW also offers high strength 1/2-20 screw-in type wheel studs. T ITANIUM D RIVE S TUD K ITS The most important factor when selecting the proper drive stud is that the drive shoulder of the stud be fully engaged in the wheel. It is recommended that the “C” length on the stud be slightly greater than the combined thickness of the brake hat or drum and the wheel. These two dimensions should be specified when ordering a MW drive stud kit. Washer thickness must be greater than the portion of the shoulder of the stud that extends past the face of the wheel. S ELECTINGTHE P ROPER D RIVE S TUDS S CREW -I N W HEEL S TUDS S TEEL D RIVE S TUD K ITS 51200 51260 51250 51255 51200 1/2-20 x 3-1/2” Wheel Studs, 12 point head (10) . . . . . . . . . . . . .75.00 51250 1/2-20 x 2” Wheel Studs, Allen head (10) . . . . . . . . . . . . . . . . . . .38.90 51255 1/2-20 x 2” Wheel Studs, 12 point head (10) . . . . . . . . . . . . . . . . .67.50 51260 5/8-18 Grand National Axle Studs, (10) . . . . . . . . . . . . . . . . . . . .193.00 Threaded to head (2-5/8” overall length.) 2” of thread 51270 5/8-11 Grand National Axle Studs, (10) not shown . . . . . . . . . . . .87.99 Coarse thread threaded to head (3-3/8” overall length.) 3” of thread. Note: MW axles are nor- mally produced with fine thread. Axles must be special ordered with 5/8”-11 threads.Next >