FMF

FMF Factory 4.1 Slip-On Muffler Titanium/Stainless Outlaw 450 MXR 525S 08 045191

Mufflers

The Factory 4.1 Is FMF Racings Premier Performance Exhaust. With 30 Years of Racing Experience Behind It, the Factory 4.1 Takes Advantage of Everything They Have Learned on the Race Track. The Factory 4.1 Is Guaranteed to Produce More Horsepower Throughout the Entire RPM Range. More Power Means Better Starts and Less Work Getting Around the Track. Reduced Weight Means Better Handling Resulting in Less Fatigue at the End of a Moto. If Performance Is Your Priority, the Factory 4.1 Is the Only Exhaust for You.

Horsepower Gains Throughout RPM Range

Advanced Engineering and Patent Pending Design

All Models Meet AMA 99dB Sound Requirement

Factory 4.1 Mufflers With Stainless Steel Midpipe

Available in Natural Titanium

Fits Stock or FMF Header

Boosts Low-Mid Torque, Broader Powerband, More Over-Rev

Please Note: The Image Displayed Is Representative of the Item, but May Vary Slightly Depending on Your Specific Model.

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