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FMF Factory 4.1 RCT SL Slip-On Exhaust
The Factory 4.1RCT (Resonance Chamber Technology) muffler incorporates the latest in resonance chamber technology
Patented core shape lowers sound levels while maintaining maximum power output
Five sided canister shape increases internal volume allowing for the use of more sound absorbing material
The new chamber design of the muffler also allowed FMF to enhance and refine exhaust pressure through a series of internal chambers while meeting FIM 2M-Max sound test as well as the AMA 94dB standards
Product Note:For closed course competition use only, not intended for street use.
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.
TC 449 2011-2013
350 EXC-F 2012-2014
500 EXC 2012-2016
YZ250F 4-Stroke 2010-2013
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Questions & Answers
Will this pipe fit a 2011 kx450f
Yes, FMF does make a Factory 4.1 RCT SL slip-on muffler to fit the 2011 Kawasaki KX450F. Simply choose your make, year and model from the dropdown fit guide that's to the right of the main image on our website and we'll get the correct FMF exhaust on its way to your quickly!
Will this fit a wr250r?
Unfortunately, FMF doesn't produce a Factory 4.1 RCT to fit any WR250R models. The only mufflers we have on hand to fit that machine from FMF come in the form of the WR250R Q4 Slip-On Exhaust or the PowerCore 4 Slip-On Exhaust for the Yamaha WR250R.