Once installed, this black axle snubber kit provides better handling and control of your Wrangler for a better overall performance. They are made of polyurethane which is a stronger replacement than rubber and lasts for as long as you need it! Polyurethane based suspension, driveline and chassis components have been designed as an upgrade to the soft factory rubber components. Precision fabrication ensures a perfect fit. Holds super grease for quiet operation and provides necessary rigidity. Bolt-on application for a direct fit.. This black polyurethane axle snubber kit from Prothane fits 76-86 Jeep CJ5, 76-83 CJ7, and 81-86 CJ8.