Yukon Gear High Performance Gear Set For GM 12 Bolt Car in a 3.90 Ratio

The Yukon Gear & Axle ring-and-pinion set for GM 12-bolt passenger cars (8.875" ring) in a 3.90 ratio offers a direct-fit upgrade to change final drive for drivability or tire compatibility. Yukon refines the tooth surface finish to reduce friction and heat and uses high-grade steel with OEM-spec fitment. It includes an 8.875" ring gear, 12 ring bolts and a 30-spline pinion, and carries Yukon's Y.E.S. lifetime protection plan.

Yukon Gear High Performance Gear Set For GM 12 Bolt Car in a 3.90 Ratio