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FMF Factory 4.1 SL Slip-On Exhaust
The Factory 4.1 is FMF Racing's premier performance exhaust. With 30 years of racing experience behind it, the Factory 4.1 takes advantage of everything they've learned on the race track. Horsepower gains throughout RPM range.
Titanium canister shape and size is lighter and more performance-optimizing
Front and rear end cap designs developed to enhance fit, function and style
Fixed, specific mounting brackets for slip-ons and full systems
Fitment is guaranteed or your money back plus free return
Don't waste time installing a product that doesn't fit. We
worked hard ensuring that this product is an exact fit on the
vehicles listed below.
CRF150R 2007-2009, 2013-2014
CRF250X 2004-2009, 2013
TE 630 2011-2012
250 SX-F 2005-2008
250 XC-F 2007-2008
250 XCF-W 2007-2008
690 Enduro 2008
690 SMC 2008-2010
YFM350R Raptor 350 2005-2013
YFM700R Raptor 700R 2006-2014
YFZ450 2004-2009, 2012-2013
YZ250F 4-Stroke 2006-2010
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