- Superior power and performance - horsepower improved throughout the rpm range
- Factory Forward Engineering centralizes mass, improves handling
- Customize with performance tuning inserts and spark arrestor module
- FITS - 2007-2014 Yamaha WR 250 F, 2007-2011 Yamaha WR 450 F, 2006-2009 Yamaha YZ 250 F, 2006-2009 Yamaha YZ 450 F