Description
- 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
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