Gen. III power rack and pinion assemblies feature compact rack housing with 1-1/2" diameter double-ended, double-mounted cylinder with steel mounting lugs. Increased steering assist uses less pump pressure while reducing system temperatures. Anopen port valve provides more flow for the larger cylinder. Redesigned steel adjustable ends are more compact to increase right turn and total shaft travel. Braided stainless steel lines increase flexibility and add clearance compared to hard lines. Gen. III unit?s a must have for high caster set-ups to eliminate binding in the center of the turn on high banked tracks. Uses a . 720" 30-spline steering u-joint (ALL52163 sold separately).Pit Stop USA offers Appleton Rack and Pinion 713030713, Appleton Gen. III Power Rack And Pinion Assembly - 3.9" Ratio w/.225' Servo - 18.25" Center to Center - Adjustable Rod End Eyes at low everyday prices. Be sure to check out all of our products from Appleton Rack and Pinion including Appleton Rack and Pinion Appleton Power Rack & Pinions and more.