Vibra Technics Competition Uprated Engine Mounts have been designed for high performance applications where a direct replacement for the standard mount is required along with a much higher level of engine control to cope with higher engine and drive train stress caused by competition driving. The competition mounts also eliminate clearance problems with strut braces and exhaust systems, body panels etc, and improve handling whist still giving vibration isolation at high engine speeds. Competition mounts are not recommended for road use.Vibra Technics Competition Uprated Engine Mounts are manufactured primarily from natural rubber compounds and occasionally from blends of synthetic and natural rubber to give particular properties for specific applications. Extensive experience and testing in all kinds of environmental conditions by automobile manufacturers has shown that only natural rubber compounds give optimum performance and durability, which is why it is still universally used toda