FMF 4-stroke motorcycle exhaust yamaha yz250f'14-18/yz250fx'15-19/wr250f'15-19 titanium megabomb w/mid pipe

Internal ducts in the RCT chambers increase internal volume for improved exhaust flow, giving a power gain over the entire engine. The rear end has a spark arrestor that is easy to install with the removal of four screws. Meets AMA and FIM noise requirements.