Purchase from Hinson Motorsports with peace of mind and security. Buy with confidence because Hinson Motorsports backs its products 100 percent. HINSON Motorsports Urethane Engine Mounts for C5 & C6 Corvette and GTO. The Hinson Motorsports Urethane Engine Mounts are designed to provide you with the ultimate balance between engine control and vibration dampening. Our special formulated urethane blend is tuned to provide the optimum experience for both street and track applications. The Hinson Motorsports Urethane Engine Mounts features an interlocking stainless steel design similar to our popular transmission mounts. With this internal stainless steel structure, it allows the engine to "float" in the urethane for a giving but secure ride without the high NVH levels of other designs. You can expect to see drastic improvements in throttle response and reduced driveline movement. These features result in faster and smoother shifts plus more deliverable power through the driveline. Features: Designed for street and race cars. Stop missing shifts by eliminating transmission movement. Direct replacement for stock rubber mount. Uses factory metric nuts and bolts (not included). Stainless Steel construction for rust free operation. Interlocking design for fail safe operation. Fast installation with basic hand tools. MADE IN THE USA. Applications: 2004-2006 Pontiac GTO & 1997-2013 Corvette C5 & C6