FMF Powercore 4 Muffler KTM 450 SX/MXC/EXC 2004-2006/450 XC-W 2007 045135 1821-0689 Chromium T-Shirt Drystar® waterproof and breathable membrane

Drystar® waterproof and breathable membrane for all-weather performance Thinsulate 120g insulation on top of hand offers excellent thermal properties

Comes complete with universal X-Factor mounting hardware

Rivet only link included

You will also need an FTEcu flash tune kit to active the shifting all sold separately

NOTE: These kits are for 2005 through 2010 YZ250 450 and many others

FMF Powercore 4 Muffler KTM 450 SX/MXC/EXC 2004-2006/450 XC-W 2007 045135 1821-0689 Chromium T-Shirt Drystar® waterproof and breathable membraneDeveloped to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding Aluminum construction and stainless steel Hi Flo end caps make for the perfect balance of performance and strength Removable spark arrestor included NOTE: To be used with stock head pipe. 2007 KTM 450 XC W 2004 2006 KTM 450 EXC 2004 2006 KTM 450 MXC 2004 2006 KTM 450 SX Fitment