Revolution Gear

Revolution Gear Ring & Pinion sets are made from top quality 8620 Steel and are precision heat treated to OEM specifications, making for the best aftermarket gears available. Revolution gears are also double, and in some cases triple lapped for flawless setup, smother running and longer life. With products that have been Street, Off Road and race proven for more than a decade, you can count on Revolution Gear & Axle products to be the best aftermarket parts available. 

Detroit Truetrac Posi LSD

The Truetrac operates as a standard or open differential under normal driving conditions, allowing one wheel to spin faster or slower as necessary. When a wheel encounters a loss of traction or the terrain changes, the gear separation forces take effect and transfer torque to the high-traction wheel. The helical-shaped gears mesh with increasing force until wheel spin is slowed or completely stopped. When the vehicle exits the low traction situation, the differential resumes normal operation. Operation of the Truetrac is smooth, quiet and automatic.  The unit will engage without any driver knowledge or action required. It also has no wearable parts and requires no maintenance, meaning less time in the garage and more on the road.

Recommended oil is standard 80/90 weight (non-synthetic) (no additives).

Master Install Kit

Premium master install kit uses only the highest quality components including Koyo brand bearings. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush collar, threadlock, marking compound, brush, and gasket or RTV silicone.

Application: 1990-1998 GM 8.5" Rearend (10 bolt cover)

Axle Spline: 30

Pinion Spline: 30

Package Includes:

1- GM 8.5" Revolution Ring and Pinion set

1- GM 8.5" Detroit Truetrac Posi LSD

1- GM 8.5" Master install kit