The Factory 4.1 exhaust system with the Powerbomb header is FMF's premier exhaust system. This system is perfect for the track or dunes, and is used by factory teams such as KTM, Epic Can-Am and Rath Racing. The Powerbomb header is made of durable stainless steel to withstand any abuse.
- Available in natural or blue anodized finish
- Horsepower gains throughout RPM range
- 94dB insert included
This Part Fits:
| Year |
Make |
Model |
Submodel |
| 2007-2013 |
Yamaha |
WR250F |
Base |
| 2007-2011 |
Yamaha |
WR450F |
Base |
| 2006-2009 |
Yamaha |
YZ250F |
Base |
| 2006-2009 |
Yamaha |
YZ450F |
Base |
