MW universal torsion bar assembly is designed for use on both Funny Car and Altered chassis, and has a 26" span with 5-inch arms. The housing is 1-1/2" x .065 diameter 4130 Chrom-Moly tubing, while the torsion bar is machined from 4140 steel. Extra fine adjustments are possible through the use of 7/8" 48-spline serrations on the torsion bar and arms. The torsion arm load is carried by Torrington™ needle bearings.