FMF Racing Factory 4.1 Mufflers

FMF Racing
Factory 4.1 Mufflers

Honda
2004-09 CRF250R/CRF250X; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-041157
Price: $511.99
Sale Price: $383.52
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2005-08 CRF450R; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-041171
Price: $486.99
Sale Price: $364.87
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2007-17 CRF150R; Factory 4.1 Slip-On Muffler, Blue Anodized
  - FMFR-041289
Price: $458.99
Sale Price: $344.01
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2011-13 CRF250R; Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041440
Price: $716.99
Sale Price: $537.18
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Dual Factory 4.1 RCT Slip-On Muffler, Stainless Titanium
  - FMFR-041497
Price: $792.99
Sale Price: $594.26
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Dual Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041498
Price: $1,019.99
Sale Price: $761.09
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-041508
Price: $681.99
Sale Price: $510.84
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Features
  • Features Resonance Chamber Technology
  • Constructed using aerospace-grade materials
  • Runs quieter than stock
  • Factory Forward design centralizes mass
  • Greater canister volume for reduced sound and increased packing life
  • Titanium muffler with blue anodized finish
  • Tiatnium mid-pipe
  • Round carbon fiber end cap

Note: For closed course competition use only. Not intended for street use.

Muffler Repacking Guide
2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Stainless Steel
  - FMFR-041507
Price: $569.99
Sale Price: $427.43
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041509
Price: $681.99
Sale Price: $510.84
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Honda
2004-09 CRF250R/CRF250X; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-041157
Price: $511.99
Sale Price: $383.52
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2005-08 CRF450R; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-041171
Price: $486.99
Sale Price: $364.87
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2007-17 CRF150R; Factory 4.1 Slip-On Muffler, Blue Anodized
  - FMFR-041289
Price: $458.99
Sale Price: $344.01
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2011-13 CRF250R; Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041440
Price: $716.99
Sale Price: $537.18
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Dual Factory 4.1 RCT Slip-On Muffler, Stainless Titanium
  - FMFR-041497
Price: $792.99
Sale Price: $594.26
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Dual Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041498
Price: $1,019.99
Sale Price: $761.09
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-041508
Price: $681.99
Sale Price: $510.84
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Features
  • Features Resonance Chamber Technology
  • Constructed using aerospace-grade materials
  • Runs quieter than stock
  • Factory Forward design centralizes mass
  • Greater canister volume for reduced sound and increased packing life
  • Titanium muffler with blue anodized finish
  • Tiatnium mid-pipe
  • Round carbon fiber end cap

Note: For closed course competition use only. Not intended for street use.

Muffler Repacking Guide
2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Stainless Steel
  - FMFR-041507
Price: $569.99
Sale Price: $427.43
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041509
Price: $681.99
Sale Price: $510.84
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Honda
2004-09 CRF250R/CRF250X; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-041157
Price: $511.99
Sale Price: $383.52
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2005-08 CRF450R; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-041171
Price: $486.99
Sale Price: $364.87
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2007-17 CRF150R; Factory 4.1 Slip-On Muffler, Blue Anodized
  - FMFR-041289
Price: $458.99
Sale Price: $344.01
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2011-13 CRF250R; Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041440
Price: $716.99
Sale Price: $537.18
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Dual Factory 4.1 RCT Slip-On Muffler, Stainless Titanium
  - FMFR-041497
Price: $792.99
Sale Price: $594.26
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Dual Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041498
Price: $1,019.99
Sale Price: $761.09
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-041508
Price: $681.99
Sale Price: $510.84
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Features
  • Features Resonance Chamber Technology
  • Constructed using aerospace-grade materials
  • Runs quieter than stock
  • Factory Forward design centralizes mass
  • Greater canister volume for reduced sound and increased packing life
  • Titanium muffler with blue anodized finish
  • Tiatnium mid-pipe
  • Round carbon fiber end cap

Note: For closed course competition use only. Not intended for street use.

Muffler Repacking Guide
2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Stainless Steel
  - FMFR-041507
Price: $569.99
Sale Price: $427.43
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-16 CRF450R; Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-041509
Price: $681.99
Sale Price: $510.84
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Kawasaki
2004-08 KX250F; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-042061
Price: $511.99
Sale Price: $383.52
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2008-09 KLX450R; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-042101
4.6 / 5 based on 2 customer reviews
Price: $511.99
Sale Price: $383.52
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Install-Download (PDF)
2009-15 KX250F; Factory 4.1 RCT Slip-On Muffler, Titanium
  - FMFR-042257
Price: $482.99
Sale Price: $361.57
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2009-16 KX250F; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium
  - FMFR-042258
Price: $569.99
Sale Price: $427.43
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2009-16 KX250F; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-042259
Price: $625.99
Sale Price: $469.13
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2011 KX450F; Factory 4.1 RCT Slip-On Muffler, Aluminum w/ Carbon Fiber Cap
  - FMFR-042291
Price: $486.99
Sale Price: $364.87
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2011 KX450F; Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized w/ Carbon Fiber Cap
  - FMFR-042267
Price: $625.99
Sale Price: $469.13
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2012-15 KX450F; Factory 4.1 RCT Slip-On Muffler, Aluminum w/ Carbon Fiber Cap
  - FMFR-042292
Price: $486.99
Sale Price: $364.87
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2012-15 KX450F; Factory 4.1 RCT Slip-On Muffler, Titanium Blue Anodized
  - FMFR-042285
Price: $569.99
Sale Price: $427.43
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Product Reviews Summary
Overall: 
4.6
2 Customer Review(s)
Appearance
4.5
Ease of Installation
4.5
Price / Value
4.5
Quality
5.0
Click Here to See
Customer Reviews of This Product
Suzuki
2004-06 RMZ250; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-042061
Price: $511.99
Sale Price: $383.52
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2010-12 RMZ250; Factory 4.1 RCT Slip-On Muffler, Aluminum w/ Stainless Cap
  - FMFR-043327
Price: $482.99
Sale Price: $361.57
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2011-17 RMZ450; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-043303
Price: $625.99
Sale Price: $469.13
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-17 RMZ250; Factory 4.1 RCT Slip-On Muffler, Titanium
  - FMFR-043348
Price: $365.99
Sale Price: $273.77
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Features
  • Features Resonance Chamber Technology
  • Constructed using aerospace-grade materials
  • Runs quieter than stock
  • Factory Forward design centralizes mass
  • Greater canister volume for reduced sound and increased packing life
  • Titanium muffler
  • Titanium mid-pipe
  • Round titanium end cap

Note: For closed course competition use only. Not intended for street use.

Muffler Repacking Guide
Suzuki
2004-06 RMZ250; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-042061
Price: $511.99
Sale Price: $383.52
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2010-12 RMZ250; Factory 4.1 RCT Slip-On Muffler, Aluminum w/ Stainless Cap
  - FMFR-043327
Price: $482.99
Sale Price: $361.57
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2011-17 RMZ450; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-043303
Price: $625.99
Sale Price: $469.13
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-17 RMZ250; Factory 4.1 RCT Slip-On Muffler, Titanium
  - FMFR-043348
Price: $365.99
Sale Price: $273.77
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Features
  • Features Resonance Chamber Technology
  • Constructed using aerospace-grade materials
  • Runs quieter than stock
  • Factory Forward design centralizes mass
  • Greater canister volume for reduced sound and increased packing life
  • Titanium muffler
  • Titanium mid-pipe
  • Round titanium end cap

Note: For closed course competition use only. Not intended for street use.

Muffler Repacking Guide
Suzuki
2004-06 RMZ250; Factory 4.1 Slip-On Muffler, Titanium
  - FMFR-042061
Price: $511.99
Sale Price: $383.52
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2010-12 RMZ250; Factory 4.1 RCT Slip-On Muffler, Aluminum w/ Stainless Cap
  - FMFR-043327
Price: $482.99
Sale Price: $361.57
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2011-17 RMZ450; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-043303
Price: $625.99
Sale Price: $469.13
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2013-17 RMZ250; Factory 4.1 RCT Slip-On Muffler, Titanium
  - FMFR-043348
Price: $365.99
Sale Price: $273.77
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Features
  • Features Resonance Chamber Technology
  • Constructed using aerospace-grade materials
  • Runs quieter than stock
  • Factory Forward design centralizes mass
  • Greater canister volume for reduced sound and increased packing life
  • Titanium muffler
  • Titanium mid-pipe
  • Round titanium end cap

Note: For closed course competition use only. Not intended for street use.

Muffler Repacking Guide
Yamaha
2006-13 WR250F, WR450F, YZ250F & YZ450F; Factory 4.1 Slip-On Muffler, Blue Anodized Titanium
  - FMFR-044235
Price: $486.99
Sale Price: $364.87
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Install-Download (PDF)
2009-20 YFZ450R & YFZ450X; Factory 4.1 RCT Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-044400
Price: $569.99
Sale Price: $427.43
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2010-13 YZ250F; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-044365
Price: $625.99
Sale Price: $469.13
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2010-13 YZ450F; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium w/ Carbon Fiber Cap
  - FMFR-044373
Price: $569.99
Sale Price: $427.43
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

2014-18 WR450F, YZ450F & YZ450FX; Factory 4.1 RCT Slip-On Muffler, Blue Anodized Titanium Carbon Tip
  - FMFR-044409
Price: $736.99
Sale Price: $552.55
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Install-Download (PDF)
2014-18 WR450F, YZ450F & YZ450FX; Factory 4.1 RCT Slip-On Muffler, Titanium
  - FMFR-044407
Price: $681.99
Sale Price: $510.84
 
We have not yet cataloged this product for fitment or product details and therefore cannot assume responsibility for ordering errors. Please read the description carefully and confirm fitment and features via the manufacturer before ordering.

Install-Download (PDF)

Learn More About FMF Racing Dirt Bike Factory 4.1 Mufflers

Overview

The Factory 4. 1 RCT includes the most recent within FMF Resonance Chamber Technology™ both internally as well as externally. This begins in the middle having a brand new core -- a patent pending shape improves and refines the exhaust pressure wave for optimal power output whilst decreasing the sound level. Additionally, all of the FMF crews accomplish the smaller general duration that's much less vunerable to accident harm as well as contrasting to the Factory Forward Engineering -- shifting the muffler nearer to the engine in order to centralize mass. Noticeable modifications towards the outside incorporate a remodeled canister to improve inner capacity of the maximum volume of packaging materials. The packaging by itself wasn't ignored - the amazing mix developed with regard to exceptional sturdiness as well as sound attenuation. The ultimate element is really a brand new back endcap designed for simple tuning changes incorporating a snap ring function to secure the standard and optional inserts. The Factory 4.1 RCT is actually made of just aerospace quality supplies which fulfill the demanding specs and it is produced 100% from the the southern area of California factory.

The Factory 4. 1 RCT (Resonance Chamber Technology) muffler is brand new through FMF Racing and includes the most recent within resonance chamber technologies. The Patented core shape reduces sound levels whilst sustaining optimum power result, and also the five-sided canister shape increases inner volume permitting using much more sound absorbing materials. The brand new chamber style from the muffler additionally permitted FMF to improve and refine exhaust pressure via a number of inner chambers whilst conference FIM 2M-Max sound test along with the AMA 94dB standards.

Giving the Factory 4. 1 the carbon fiber shell, FMF created the worlds greatest peforming lightest exhaust. The Factory 4. 1 Carbon makes use of exactly the same cutting edge technologies since the titanium edition. This exhaust does not simply appear Factory-it feels Factory. If you would like the lightest as well as greatest carrying out exhaust obtainable, the Factory 4. 1 C is perfect for you.

The Factory 4. 1 is actually FMF Racing's leading overall performance exhaust. Along with thirty many years associated with racing encounter behind, the Factory 4. 1 requires benefit of every thing the FMF have discovered about the competition track.