Uses 1480 u-joint. End of pinion yoke to u-joint center ("B") is 3-7/8". 2.375” diameter for computer pick up ring. Manufactured from high strength heat treated 4140 steel. All machining is done in relationship to the spline pitch diameter to ensure each yoke is symmetrical for balance and smooth operation. Utilizes billet steel cap kit for added strength. - Sold separately.