The rubber exhaust hose is the most flexible hose available, because of the large number of spiral turns and the smooth EPDM rubber. The completely smooth internal surface of the hose will reduce back pressure in the engine. Exhaust hoses with an internal diameter up to Ø 152mm have a bending radius of 1.5 x the diameter. Temperature resistant between -30º + 100ºC with brief temperatures of 115ºC.