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Exhaust

Headpipe

XR650L '93 - '26

The PowerBomb header promotes better flow by allowing a small expansion of the exhaust gasses. The 'bomb' also acts as a pre-muffler taking the edge off of overall sound levels.

Optional Heat Shield Strip will protect your airbox from the close proximity of the hot head pipe.

Backordered: Waiting for stock from suppliers to fulfill orders placed on or after December 2024
$324.95

Our very own high flowing head-pipe is made in the USA using a CNC (computer numerically controlled) mandrel bender for an absolute perfect fit. It is a high quality 2-piece 18 gauge stainless steel head-pipe with 1 3/4" outer diameter, compared to the stock outer diameter of 1 1/2".

The SS Pro-Flow is a tested upgrade over stock that will bolt right on with no modifications needed. It is compatible with any combination muffler/mid-pipe, as well as all motor configurations of the DR650 '96-current.

Includes a stainless steel band clamp for the mid-pipe joint, clamp-on heat shield mounts, to use with stock heat heat shield and a stainless steel flange at the exhaust port mount. We recommend a new exhaust gasket when installing your new SS Pro-Flow.

Add Exhaust Gasket
Add Anti-Seize
Add Muffler Gasket
Ships same business day
$259.95

The PowerBomb header promotes better flow by allowing a small expansion of the exhaust gasses. The 'bomb' also acts as a pre-muffler taking the edge off of overall sound levels. Includes clamp-on mounts for the stock heat shield. We recommend Anti-Seize on exhaust fasteners.

Add Anti-Seize
Add Exhaust Gasket
Ships same business day
$249.95
CRF450X '19 - '26
  • The ultimate power booster featuring exclusive Ti-Metal construction
  • Improved bottom to mid-range power
  • Produce the low end of a longer header and the top end of a short header
  • Less susceptible to damage than a long header
  • Runs well with sound-restricting mufflers; effectively reduce sound output by as much as 1.5 dB
  • Substantial power increases everywhere
  • Constructed of extremely lightweight materials
Ships same business day
$349.95
WR250R '08 - '20 WR250X '08 - '11

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 slip on for as much as a 3hp boost, plus the MegaBomb actually reduces noises levels by as much as 1.5dB. The MegaBomb technology is evolved to produce more low end to mid range gains as well as broadening out the mid to top end power gains over stock. MegaBomb is the next level technology you can have today.

  • Produces long header torque and short header over-rev
  • Reduces sound output as much as 1.5dB
  • Increases output from stock motor as much as 3hp
  • Stainless Steel Construction for durability

For FMF mufflers only

Ships same business day
$349.95
WR250R '08 - '20 WR250X '08 - '11

The PowerBomb header promotes better flow by allowing a small expansion of the exhaust gasses. The 'bomb' also acts as a pre-muffler taking the edge off of overall sound levels. Includes clamp-on mounts for the stock heat shield.

For FMF mufflers only

Please contact us for availability information
$249.95
KLR650 '84 - '07

The FMF Powerbomb is a four stroke header pipe unit that has a unique bulge precisely located in the header system. A "pre-muffler" of sorts, the Power Bomb actually lowers sound output because it creates more surface area to absorb the sound medium (exhaust). The surface area of the perforated core lets the sound exit into the absorbing material (steel wool packing) and then allows the air to expand, cool and ramp back up with the higher pressure air. The result? The FMF Powerbomb is instrumental in reducing the decibel level on any four stroke and because of the expansion and contraction on exhaust through the system, the flow has been increased by nearly 10%. That means more power throughout the range.

Features:

  • Tuned for bottom to mid performance
  • Powerbomb headers are the front runner in performance headers
  • Designed for full service access to oil filter
Choose Year
Ships same business day
$249.95
KLX250S '09 - '10 KLX250S '12 - '20 KLX300R '20 - '26
  • Select applications available in SX version that is designed for more low to mid-range power and an MX version that is focused in the mid-to-upper rpm range
  • Act as "pre-muffler" helping to lower the decibel output
  • Available in stainless steel for strength combined with light weight, or in titanium for even greater weight savings
  • Utilize FMF's patented module precisely located at the initial stage of the header for specific applications
  • Horsepower is increased as much as 10%
  • The expansion and contraction of exhaust sonics through the system causes increased flow
  • Position "Bomb" increases performance
Ships in 3-5 business days
$249.95
XR650L '93 - '26 XR600 '85 - '00

The EVO R series draws on our rich heritage of making power. Offered for various off road MX and sport ATV models, the EVO R is a tried-and-true series that will save weight, add noticeable performance gains and sound tremendously better than stock.

  • Precision-bent TIG welded 304 stainless steel head pipes & collector pipe
  • Larger diameter than stock head pipe
  • Lighter than stock head pipe
  • Increased horsepower and torque gains
  • Handmade in the USA
  • 1 Year Limited Manufacturer’s Warranty
Ships same business day
$308.95
WR250R '08 - '20 WR250X '08 - '11

The EVO R series draws on our rich heritage of making power. Offered for various off road MX and sport ATV models, the EVO R is a tried-and-true series that will save weight, add noticeable performance gains and sound tremendously better than stock.

  • Precision-bent TIG welded 304 stainless steel head pipe
  • Larger diameter than stock head pipe
  • Lighter than stock head pipe
  • Increased horsepower and torque gains
  • Handmade in the USA
  • 1 Year Limited Manufacturer’s Warranty
Please contact us for availability information
$253.95
KDX200 '95 - '06 KDX220 '95 - '06

The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain. When looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe for you. Strong and rugged, this aggressive pipe dishes out handfuls of torque and bottom to mid range pull needed for late model 200cc through 500cc machines and the rigors of the off road domain.

  • Nickel plating is an FMF trademark and has been ‘copied’ by everyone making it the most imitated expansion chamber in the world.
  • Super strong18 gauge steel construction makes it GNARLY!
  • O-Rings Included
Choose Style
Ships in 3-5 business days
$299.95

Full System

The FMF Powerbomb and Q4 Muffler are legendary in the exhaust market.

The Powerbomb header promotes better flow by allowing a small expansion of the exhaust gasses improving scavenging. The 'bomb' also acts as a pre-muffler taking the edge off of overall sound levels.

The Q4 muffler employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available with a sound output of 96dB; with most models below 93 dB. It is constructed from aircraft grade aluminum and high strength stainless steel.

Choose Year
Ships in 3-5 business days
$664.95

Another great combination package - the FMF Powerbomb header and Powercore 4 Muffler.

The Powerbomb header promotes better flow by allowing a small expansion of the exhaust gasses improving scavenging. The 'bomb' also acts as a pre-muffler taking the edge off of overall sound levels.

The PowerCore4 muffler was developed to increase the horsepower and torque throughout the entire power curve and give you a noticeable power increase that is very usable and beneficial, no matter what your riding style or ability is.

Some of the features of the PowerCore 4 include: space age internal packing for maximum packing life; hi-flo modular end cap; internal shape of core uses hi-flo technology; enhanced sonic evacuation provides for higher flow and increased power and removable spark arrestor.

Choose Year
Add Anti-Seize
Please contact us for availability information
$617.95

Exhaust, Featured Products

Headpipe

Our very own high flowing head-pipe is made in the USA using a CNC (computer numerically controlled) mandrel bender for an absolute perfect fit. It is a high quality 3-piece welded two into one, stainless steel head-pipe.

  • Primary tubes: 1-1/4" diameter
  • Collector tube: 1-3/4" diameter
  • Secondary tube: 1-5/8" diameter

The SS Pro-Flow is a tested upgrade over stock that will bolt right on with no modifications needed. 

We recommend a new exhaust gasket when installing your new SS Pro-Flow.

Add Exhaust Gasket
Add Anti-Seize
Ships same business day
$334.95