Our GYTR Alloy / Stainless Slip-On Muffler for our YZ / WR models are perfect for both trail riders and racers. They comply with most MA noise regulations for racing at 115DB, whilst still offering significant gains across the power range. (This will not fit the 2008 YZ450F).
Replacement muffler packing is available pt# GYT-REPKT-72-AU
Replacement muffler decal is also available pt# APP-GYTRN-S4-13
Will work with Standard header pipe or with GYTR Performance Header Pt# 1DX-E46A0-V0-AU (Sold seperately)
Note: For closed course competition use only.
Fits:
- 2007 – 2015 WR450F
- 2007 YZ450F
- 2009 YZ450F
