Cognito 99-19 Chevy/GMC Silverado/Sierra 1500/2500/3500 2WD/4WD 3 Degree Rear Pinion Angle Shim Kit

If you've put a lift on your 1999-2019 Chevy Silverado or GMC Sierra 1500, 2500, or 3500, especially with a taller lift that doesn't include tapered blocks, you might notice some driveline vibrations. That's often because the pinion angle of your rear differential is no longer aligned with the transfer case. This Cognito 3-degree rear pinion angle shim kit is designed to correct that misalignment. It helps reduce vibrations and wear on your U-joints by bringing the driveshaft back into a more favorable angle.

This kit includes two shims and two center pins. The shims are designed to bolt directly onto your leaf spring packs, making installation straightforward. They're particularly useful for trucks with single cabs or extended cab short beds that have a 4-6 inch rear lift and no factory provision for pinion angle correction. By adding this 3-degree angle, you're effectively re-aligning the driveline to reduce stress and noise.