Products

Full exhaust systems for 4 strokes. Utilising FMF's famous MegaBomb or PowerBomb header systems, and matched with FMF's wide range of slip-on muffler options. FMF designs and builds everything by hand, from the ground up in the USA. As long as you dream of flying higher and going faster, FMF will...

MEGABOMB HEADER: The science behind the MegaBomb header may be FMF's greatest engineering accomplishment to date. You can bolt on a Megabomb with an existing FMF Racing muffler for as much as a 3hp boost, plus the Megabomb actually reduces noises levels by as much as 1.5dB. The Megabomb technolog...

FACTORY 4.1 RCT: Incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, FMF achieve a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering: moving the muffler closer to the motor t...

Did you know a freshly re-packed silencer actually restores power? FMF's 4 stroke exhaust packing is comprised of high-temp fiberglass for an economical replacement. Replacement packing for all 4 stroke exhausts with core up to 16" long.  Sold individually; enough for one exhaust canister.

Did you know a freshly packed silencer or muffler actually restores power? Everlast Packing is FMF's premier performance exhaust packing. Comprised of fine, interwoven fiberglass fibers made to FMF's specifications for high heat resistance, great sound attenuation and optimum performance and lon...

Did you know a freshly re-packed silencer actually restores power? Everlast Packing is FMF's premier performance exhaust packing. Comprised of fine, interwoven fiberglass fibers made to FMF's specifications for high heat resistance, great sound attenuation and optimum performance and longevity. ...

A range of FMF components such as sticker sets, core inserts, and replacement end caps for FMF 4 Stroke Slip-On's / Silencers / Mufflers.  

POWERCORE 4: When designing the PowerCore 4, FMF looked at their top of the line products to deliver race-inspired performance at an economical price. The end result is a quality 4 stroke muffler with improved torque, increased horsepower and rugged durability all at a price that won’t break the ...

Q4 HEX: FMF is the leader in high performance quiet technology and the Q4 HEX is the next evolution in offroad exhaust. The Q4 HEX silencer employs intricate chambers, baffles and proprietary multi-stage packing material making it the best performing quiet muffler available. With the Q4 HEX you d...

Replacement parts for FMF 4 stroke header / mid pipes. Kit includes 2 x 70mm exhaust springs.  

Replacement parts for FMF slip on mufflers: FATTY / GNARLY / Factory FATTY. Kits include pipe O-rings and springs.  

The must have for any tool box. Makes removing and installing exhaust springs extremely easy.  

Film System Full Kit for Youth Goggles Built from 100% Forecast Film system with 45mm wide field of vision Self-cleaning canister with integrated film wipe reduces mud build up Smooth rolling drawstring for easy pulling Anti-fog coated polycarbonate lens with anti-stick dots 9 retention po...

The best way to improve the look and performance up your Yamaha YZ250F / YZ450F is to install an FMF Exhaust. Now FMF has added a cool exhaust guard to protect you and keep your bike looking great. And it's also titanium Just bolted on and you're ready to ride!!