This wedge -type shim fits between the rear spring and the axle to change pinion angle by ±2.5°. It fits the unique 2 hole design of the new F150 platform. Recommended to align the driveline on vehicles that have been lowered or lifted.
Rear Adjustment range: Pinion ±2.50°
Installation time: .5 hr/axle
Required: 1 kit per axle
Recommended tools: 64225 - Angle Gauge