Exhaust

Fitment:2003-2004 CR 250R The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams. It shares many of the same chara...

Fitment: 2019-2023 RM-Z 250 2011-2023 RM-Z 450 Select your year/model in the menu above Note: FMF does not recommend or guarantee you try to match ...

Fitment: Select your year/model from the options above The FMF Titanium Megabomb Header Pipe uses its unique midsection profile to deliver absolute...

Fitment: 2017-2020 KX 250F 2021-2023 KX 250/X 2016-2018 KX 450F 2019-2023 KX 450/X Select your year/model in the menu above.  Note: FMF does not re...

Fitment:2022-2025 YZ 125 2023-2025 YZ 125X The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams. It shares many...

Fitment:2005-2021 YZ 125 2020-2022 YZ 125X The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams. It shares many ...

Fitment: 1989-2001 RM 80 2002-2022 RM 85   Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inn...

Fitment: 2003-2007 KX 250 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and...

Fitment: 1999-2002 KX 250 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and...

Fitment: 1996-2000 RM 250 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and ...

Fitment:2000-2001 CR 125R Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and a...

Fitment: 1996-1999 YZ 250 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and ...

Fitment: 1996-1999 YZ 125 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and ...

Fitment: 2000-2001 YZ 250 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and ...

Fitment: 1996-2000 RM 125 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and...

Fitment: 2000-2001 YZ 125 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and...

Fitment: 1999-2002 KX 125 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and...

Fitment: 1994-1998 KX 250 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and...

Fitment: 2003-2008 RM 250 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and ...

Fitment: 2003-2007 RM 125 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and ...

Fitment: 2003-2005 KX 125 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and ...

Fitment: 2002-2007 CR 125R Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and...

Fitment: 2001-2002 RM 125 Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner core length and ...

Fitment: 1996-2002 CR 80R 2003-2007 CR 85R Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inn...

Fitment: 2002-2021 YZ 125 2020-2022 YZ 125X Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner ...

Fitment: 2022-2025 YZ 125 2023-2025 YZ 125X Taking the proven success of the Powercore 2, FMF created the Powercore 2 Shorty, with a shorter inner ...

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

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

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...

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...