Exhaust

Fitment: 2005-2009; 2012-2017 CRF 450X   The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally, In ad...

Fitment: 2021-2023 CRF 450R  Exhaust Description:  The Ti-6 Titanium Exhaust System is designed to improve performance and is constructed of titani...

Fitment: 2022-2024 CRF 250R   Exhaust Description:  The T-6 Stainless Steel Slip-On is for riders looking for an inexpensive, easy-to-install, dura...

Fitment: 2022-2025 CRF 250R/RX Exhaust Description:  The T-6 Exhaust System offers maximum performance and is constructed of a stainless steel head...

Fitment: 2003-2025 YZ 250/X  Silencer Description: The R-304 silencer was developed as a full-race two-stroke silencer. The compact design of the s...

Fitment: 2000-2001 YZ 125  Silencer Description: The R-304 silencer was developed as a full-race two-stroke silencer. The compact design of the sho...

Details When designing the PowerCore4, we looked at our top of the line products to deliver race-inspired performance at an economical price. The ...

Fitment: 2002-Present KLX110 All ModelsWe take fun seriously so we built the Mini Factory 4.1. This is an all out performance exhaust for play bike...

 Fitment: 2002-2024 KLX 110  Built using our black hard anodized octagonal aluminum muffler housing and carbon fiber end cap from our full size exh...

Fitment: 2008-Present KLX140 all models   Blue Anodized muffler with stainless steel end cap Factory 4.1 muffler available in natural titanium o...

Fitment: Select your year/model above Exhaust Description:  The T-6 Stainless Steel Exhaust System offers maximum performance and is constructed of...

Fitment: Select your year/model above Exhaust Description:  The T-6 Stainless Steel Exhaust System offers maximum performance and is constructed of...

Fitment: 2021-2025 CRF 450R Exhaust Description:  The T-6 Stainless Steel Exhaust System offers maximum performance and is constructed of stainless...

Details FMF has always set itself apart by offering great options to lower your bike’s sound output. The Hex Q4 is no different. With a series of...

  Details FMF has always set itself apart by offering great options to lower your bike’s sound output. The Hex Q4 is no different. With a series of...

Fitment: Choose your year/model in the menu above   *Available with or without Spark Arrestor Insert Hi-Flo end cap boosts all-around performanc...

Details FMF has always set itself apart by offering great options to lower your bike’s sound output. The Hex Q4 is no different. With a series of...

Fitment: 2019-2024 CRF450X  Exhaust Description:  The T-6 Exhaust System offers maximum performance and is constructed of a stainless steel head pi...

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 Ra...

Note: FMF does not recommend or guarantee you try to match this header to a stock muffler. The FMF Titanium Megabomb Header Pipe uses its unique...

Details * Blue Anodized Titanium Muffler with Carbon End Cap and Titanium Megabomb Header. FMF is one of the top players in the game when it comes...

Details Aluminum Muffler with Carbon Fiber end cap and Stainless Steel Megabomb Header. The FMF Factory 4.1RCT (Resonance Chamber Technology) Alumi...

Specs: Premium aluminum alloy canister body Genuine carbon fiber composite end cap Rapid Tuning System (RTS) allows for swapable end cap inserts (...

Features Please select from the available year/models above The T-6 Stainless Slip-On Silencer is designed for a rider looking for an inexpensive, ...

Details Improves performance. Equipped with a removable USFS approved spark arrestor. Stainless steel construction throughout head pipe, mid pipe ...

Features T-6 Stainless Slip-On Silencers are designed for a rider looking for an inexpensive, easy-to-install, durable performance silencer that c...