The Pro Circuit 304 Factory Sound Silencer is designed specifically for 2004-2008 Suzuki RM250 motorcycles. This silencer, with the manufacturer part number SS04250-SE, is designed to be placed on the exhaust of the vehicle. It offers a factory sound level while still providing a level of noise reduction. Pro Circuit ensures that this silencer meets the needs of Suzuki RM250 owners looking to maintain their bike's performance and noise level. Plus, it comes with a warranty for added peace of mind. Pipe is new. Never installed, only took out of packaging.