Jounce Bumper and Bellows

The plastic bellows on this KYB rear strut boot kit are made from a highly durable material, designed to keep contaminants like dirt, dust, sand, and salt away from your strut's polished shaft, upper seal, and bushing. These elements can cause abrasive wear over time, but this boot acts as a barrier, preventing them from getting in and damaging critical components. This protection can easily help extend the overall life of your struts.

Beyond just keeping dirt out, this kit also includes a poly foam travel-limiting bumper. This bumper is built to prevent the strut from bottoming out during hard impacts or extreme suspension movements, which helps protect both the strut itself and other nearby suspension parts from damage caused by excessive travel.