Motorsport exhaust rubber holder for exhaust systems BOOST Products exhaust rubber holders blue - heat resistant (3 pieces per package) High quality exhaust rubbers Motorsport exhaust rubber holders for exhaust systems This reinforced exhaust rubbers from BOOST Products are high-temperature-resistant silicone rubbers especially made for the exhaust systems of racing vehicles. They are temperature resistant up to 220°C permanently. It is important to know that the radiation heat is rarely the stress, the problem is mainly the transfer of the often higher temperatures of the exhaust systems on the exhaust holder that sits in the rubber. With the permanent pressure of the exhaust holder on the rubber, which is also like increased in performance vehicles, the standard rubbers often break very fast.