This all-new Muffler incorporates the latest Resonance Chamber Technology. The patented chamber design enhances and refines exhaust pressure. Its patented core shape lowers sound level while maintaining maximum power output, and the patented canister shape increases internal volume for more sound-absorbing material. Factory Forward Engineering centralizes mass and is less prone to impact damage. Maintenance is made easy with the removal of four screws on the front end cap, and the innovative rear end cap simplifies installation of the spark arrestor (sold separately) or tuning tip inserts. Includes QuietCore™ 94 dBA insert.
Designed to work with the stock OEM header or the GYTR power Header Pt# 2S2-E46A0-V0 (sold seperately)
Built 100% in the U.S.A. This accessory is restricted to closed-course use.
Fits:
- 2007 – 2014 WR450F
- 2006 – 2013 YZ250F
