Ford 9" Powertrax 31 Spline Worm Drive Gears Trutrac

the Aeroflow performance ford 9" powertrax assembly is the latest design in traction control. Utilizing 3 x 2 spiral gear technology for smooth, dependable operation that combines limited-slip characteristics from gears contained in a machined, forged steel center housing. The powertrax delivers progressive & variable traction releasing tension on the center to turn corners while locking up to put the power down through both wheels in a straight line. Suits oem 2. 875" and aftermarket 3. 062" bore cases. Available in both 28 and 31 spline.