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For over 35 years FMF has delivered superior power and performance to motorcycle enthusiasts around the globe. FMF mufflers are developed over years of championship offroad racing. FMF Racing FMF Exhausts are made in the USA from the highest grade aircraft-spec materials such as titanium, stainless steel and carbon fiber components.

See available FMFApplications

KTM 250/350 SX-F/XC-F 2016-18, 250/350 EXC-F 2017-18
    Availability Guide: If you order an item that is on backorder, we will not charge your card until the order is ready to ship.
    = Normally ships the same business day     = Ships in 1 to 2 business days     = On backorder from the manufacturer
  FMF Mufflers  Cost  Add To Cart 
Factory 4.1 RCT Titanium Anodized Blue SL (Slip-On) w/Carbon Endcap
Fits KTM 250/350 SX-F/XC-F 2016-18, 250/350 EXC-F 2017-18
FMF-045586
$449.99
MSRP $499.99
 
Notice: Closed Course Use Only - Item ID: 045586, Type: Slip-On, Configuration: Single, Const: Titanium, Finish: Blue Anodized,
Endcap: Carbon, Spark Arrestor: Screen Insert (included), Quiet Insert: Included, Weight: 4.2 lbs.
Factory 4.1 RCT Titanium SL (Slip-On) w/Titanium Endcap
Fits KTM 250/350 SX-F/XC-F 2016-18, 250/350 EXC-F 2017-18
FMF-045595
$399.99
MSRP $449.99
 
Call or Email for availability!
Notice: Closed Course Use Only - Item ID: 045595, Type: Slip-On, Configuration: Single, Const: Titanium, Finish: Natural,
Endcap: Titanium, Spark Arrestor: Screen Insert (included), Quiet Insert: 94dB Insert (included), Weight: 4.2 lbs.
Factory 4.1 RCT Titanium Anodized Blue SL (Slip-On) w/Titanium Endcap
Fits KTM 250/350 SX-F/XC-F 2016-18, 250/350 EXC-F 2017-18
FMF-045596
$399.99
MSRP $449.99
 
Notice: Closed Course Use Only - Item ID: 045596, Type: Slip-On, Configuration: Single, Const: Titanium, Finish: Blue Anodized,
Endcap: Titanium, Spark Arrestor: Screen Insert (included), Quiet Insert: 94dB Insert (included), Weight: 4.2 lbs.
Factory 4.1 RCT Aluminum SL (Slip-On) w/Carbon Endcap
Fits KTM 250/350 SX-F/XC-F 2016-18, 250/350 EXC-F 2017-18
FMF-045594
$359.99
MSRP $399.99
 
Notice: Closed Course Use Only - Item ID: 045594, Type: Slip-On, Configuration: Single, Const: Aluminum, Finish: Natural,
Endcap: Carbon, Spark Arrestor: Screen Insert (included), Quiet Insert: 94dB Insert (included), Weight: 4.3 lbs
Q4 Hex SA Aluminum w/Stainless Steel Endcap
Fits KTM 250/350 SX-F/XC-F 2016-18, 250/350 EXC-F 2017-18
FMF-045590
$341.99
MSRP $379.99
 
Call or Email for availability!
Notice: Closed Course Use Only - Item ID: 045590, Type: Slip-On, Configuration: Single, Const: Aluminum, Finish: Natural,
Midpipe: Stainless Steel, Endcap: Stainless Steel, Spark Arrestor: Screen Insert (included), Quiet Insert: Included, Weight: 5.1 lbs.
PowerCore 4 Hex Aluminum w/Stainless Steel Endcap
Fits KTM 250/350 SX-F/XC-F 2016-18, 250/350 EXC-F 2017-18
FMF-045589
$296.99
MSRP $329.99
 
Notice: Closed Course Use Only - Item ID: 045589, Type: Slip-On, Configuration: Single, Const: Aluminum, Finish: Natural,
Midpipe: Stainless Steel, Endcap: Stainless Steel, Spark Arrestor: Screen Insert (included), Quiet Insert: Quiet Insert (sold separately),
Weight: 4.9 lbs.
  FMF Headers  Cost Add To Cart 
SX Style MegaBomb Header Titanium
Fits KTM 250/350 SX-F/XC-F 2016-18
FMF-045610
$494.99
MSRP $549.99
 
Notice: Closed Course Use Only - Item ID: 045610, Type: Header, Configuration: Single, Header Const: Titanium,
Header Type: MegaBomb, Weight: 1.5 lbs.
SX Style MegaBomb Header Stainless Steel
Fits KTM 250/350 SX-F/XC-F 2016-18
FMF-045612
$427.99
MSRP $474.99
 
Notice: Closed Course Use Only - Item ID: 045612, Type: Header, Configuration: Single, Header Const: Stainless Steel,
Header Type: MegaBomb, Weight: 2.6 lbs.

Larger Images

Exhaust Products - Larger Images See available FMFApplications
FMF Mufflers  -------------------------------------------------------------------------
FMF-045586 4.1 RCT Titanium Anodized SL w/Carbon Cap FMF-045595 Factory 4.1 RCT Titanium SL (Slip-On) w/Ti Endcap
FMF-045596 Titanium 4.1 RCT Blue Anodized SL w/Ti Endcap FMF-045594 Factory 4.1 RCT Stainless (Slip-on) w/Carbon Cap
 
FMF-045590 Q4 Hex SA Aluminum w/Stainless Steel Endcap FMF-045589 Powercore 4 Hex
MegaBomb Header
FMF Header  -------------------------------------------------------------------------
MegaBomb Header - Titanium FMF-045610 / Stainless Steel FMF-045612
The science behind the Megabomb header may be our 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 revolved to produce more low end to mid range gains as well as broadening out the mid to top end power gains over stock. The Megabomb is best used for Motocross/Supercross and GNCC style trails. Used by Factory Teams, the 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
  Made from premium American materials
 
About FMF ----------------------------------------------------------------------------
Over the decades, FMF seen an amazing transformation in the world of motorcycles and ATVs. The progression of the technology is one of the challenges that keeps FMF going. FMF was there in the days when the single-shock and water-cooled engines were huge innovations and they're glad to be here now for the aluminum chassis and electronic fuel injection. Their goal will never change - take the most advanced machinery to its limit by building the world's best performing exhausts. And its a fact, they build every exhaust by hand from start to finish right here in the U.S.

At the end of the day, there is always one major force keeping them motivated—throwing a leg over the bike and heading for the trails or the track. Their biggest reward for is knowing they're helping customers get the most out of their riding experience. They still ride every chance they get so they never forget why they got into this business in the first place.

History - FMF Racing (Flying Machine Factory) was one of the first aftermarket motorcycle manufacturers, having been started by Don Emler in 1973. From its humble beginnings in Emler's garage, FMF Racing has become 1 of the leaders in manufacturing exhaust pipes, making a number of different pipes for motorcycles and offroad vehicles of all types.