This is the Powertrax EXTREME TRACTION POSI unit for the General Motors 10 bolt 8.5 and 8.6 rears with 30 spline axle, (1989 to present). This is the latest in traction systems, with carbon fiber and steel friction plates for long life with smooth operation and because of the friction plates on machined steel gears, easy replacement when re-build needs to happen. These units have forged, machined steel case for super strength, long life and durability. This model fits General Motors 10 bolt 8.5" rear with 30 spline axle and General Motors 10 bolt 8.6" rear with 30 spline axle. If you need additional traction for your daily driver, recreational activities or to put the power of your muscle car to the pavement, this is the latest in smooth, drive-able, traction enhancing differentials.

QUESTIONS? e-mail or call 877-614-4327 and we will cheerfully assist you with your needs for your application.