In this black drive train kit , 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.. This black polyurethane drivetrain kit from Prothane fits 76-83 Jeep CJ5, 76-86 CJ7, and 81-86 CJ8 with a factory 6 cylinder engine.