Cognito 99-19 Chevy/GMC Silverado/Sierra 1500/2500/3500 2WD/4WD 4 Degree Rear Pinion Angle Shim Kit

When you lift a truck, especially a short-wheelbase model with a taller rear lift, the angle of your rear driveshaft can get thrown off. This Cognito shim kit includes two shims and two center pins designed to bolt directly to your leaf springs. They help correct the rear pinion angle, which is important for reducing vibrations and wear on your drivetrain components. This kit is particularly useful for trucks with a 4-6 inch rear lift that don't have tapered blocks, or when you need to adjust the angle after a spring-only or straight-block lift.

This kit is designed to provide a 4-degree correction, which is often needed on single cab trucks or extended cab short bed configurations. By properly aligning the driveshaft, you can help ensure smoother operation and extend the life of your U-joints and differential. It's a straightforward way to address a common issue that arises after lifting a truck.