Expected availability: mid-December 2009
The Factory 4.1 Complete Full Exhaust System is FMF Racing's premier performance exhaust system for the 2010 YZ450F. This exhaust system guarantees horsepower gains throughout the RPM range and is the lightest full exhaust system available for the 2010 YZ450F. FMF has developed a state of the art, light weight and amazingly powerful aftermarket solution incorporating the all new tornado-style header for the 2010 YZ450F.
Factory4.1 System
* Used by professional race teams such as Factory KTM, Yamaha of Troy and Star Racing
* Horsepower gains throughout RPM range
* Powerbomb header available in stainless steel or titanium; megabomb comes in titanium only
* Muffler available in natural or blue anodized finish
On sale at Buster's Dirt Shop for $595.95
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