Offroad Catalog
- ATV Tires & Wheels
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- Exhaust
- Akrapovic Exhaust Systems
- Akrapovic Replacement Parts & Repack Kits
- Cobra Spark Arrestors, End Caps & Inserts
- Competition Repack Cartridges
- FMF Exhaust Parts, Pipe Kits & Packing
- FMF Exhaust Systems
- Jardine Exhaust Systems & Slip-On Mufflers
- LeoVince Exhaust Systems
- Muffler Plugs, Silencer Guards & Pipe Armor
- Pipe Guards, Heat Shields & Cable Ties
- Pro Circuit 2-Stroke Exhaust Systems
- Pro Circuit Exhaust Systems, Slip-Ons & Silencers
- Replacement Parts, Silencers & Wrap Kits
- Rivet Kits, Muffler Packing, Tape & Springs
- Scorpion Slip-On Silencers & Headpipes
- Silencers & Spark Arrestors
- Systems, Slip-Ons, Silencers & Head Pipes
- WhiteBros Exhaust Systems
- Yoshimura Exhaust Systems
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EXHAUST SYSTEMS AND SLIP-ON MUFFLERS
Features
- Complete systems and slip-on mufflers
- Systems feature titanium PowerBomb header and midpipe, except where noted
- Factory 4.1 muffler available in natural titanium or blue anodized titanium with titanium end caps
- Factory 4.1C muffler constructed from carbon fiber with titanium end caps
- The lightest mufflers and full systems available
- Superior power and performance – horsepower improved throughout the rpm range
- Features exclusive proprietary Chamber Core and PowerBomb technology
- Factory forward engineering centralizes mass, improves handling
- Ti or carbon muffler with titanium end caps, mid-pipe and PowerBomb header
- Made from premium quality American materials
- Customize with performance tuning inserts and spark arrestor module
- Meets AMA sound requirements on most models; inserts available for others
- Incredible horsepower gains with 99 dB sound level
- Titanium construction with American TIMETAL® canister and rear end cap
- Designed with FMF’s exclusive Factory Forward Engineering – lowering the center of gravity and centralizing mass
- Utilizes advanced multistage packing material and a Hi-Flo stainless steel formed front end cap and mid-pipe
- Removable spark arrestor included and optional 96 dB insert available separately
- Offers an increase of power that starts from the low end of the rpm scale and continues on through the mid with a huge increase in top-end rpm power
- Constructed from military-grade titanium – the lightest and strongest metal on the planet
- Substantial power gains over standard systems
- Space-age internal packing for maximum packing life
- The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound
- Less mass to enhance power-to-weight ratio
- Quiet power with minimal sacrifice for performance
- Developed over years of championship off-road racing
- Twin-stage core design for lower sound output and extended life of packing material
- Comes standard with spark arrestor
- Developed over years of championship off-road racing
- Max sound output 96 dB; most models below 94 dB
- American TIMETAL® canister, end caps and mid-pipe
- Comes standard with spark arrestor
- High performance
- Quiet technology
- Weighs 10% less than the original Q
- Consistently meters below 96 dB
- Maintenance-free U.S.F.S.-approved spark arrestor
- Fits stock and PowerBomb header
- Q
- POWERCORE 4 AND POWERCORE 4 SA
- Combines the huge weight savings of titanium with the performance traits gleaned from FMF’s association with factory motocross teams
- Thousands of hours of both track and dyno time have resulted in power gains averaging just under 20%
- Made from military grade titanium that is light and durable – in most cases the Ti 4 is 50% lighter than stock
Images
FACTORY 4.1™/ FACTORY 4.1C™
250 SXF 05-06
| Part # | Description | Retail |
|---|---|---|
| 1820-0295 | Factory 4.1 system, natural | $799.95 |
| 1820-0473 | Factory 4.1 system, natural w/ MegaBomb header | $899.95 |
| 1820-0474 | Factory 4.1 system, anodized w/ MegaBomb header | $899.95 |
| 1820-0296 | Factory 4.1 system, anodized | $799.95 |
| 1820-0297 | Factory 4.1C (carbon fiber) system | $899.95 |
| 1820-0475 | Factory 4.1C (carbon fiber) system w/ MegaBomb header | $999.95 |
| 1821-0318 | Factory 4.1 slip-on muffler, natural, titanium mid-pipe | $399.95 |
| 1821-0319 | Factory 4.1 slip-on muffler, anodized, titanium mid-pipe | $399.95 |
| 1821-0320 | Factory 4.1C (carbon fiber) slip-on muffler | $499.95 |
| 1821-0688 | Power Core 4 slip-on muffler - To be used with stock header | $299.95 |
| 1821-0459 | Ti PowerCore slip-on muffler, natural - To be used with stock header | $349.95 |
| 1821-0460 | Ti PowerCore slip-on muffler, anodized - To be used with stock header | $349.95 |
| 1821-0683 | Q4 spark arrestor muffler - To be used with stock header | $359.95 |
| 1821-0758 | Q4 Ti spark arrestor muffler - To be used with stock or FMF header | $399.95 |
250 SXF 07-08
| Part # | Description | Retail |
|---|---|---|
| 1820-0631 | Factory 4.1 system, natural | $799.95 |
| 1820-0633 | Factory 4.1 system, natural w/ MegaBomb header | $899.95 |
| 1820-0632 | Factory 4.1 system, anodized | $799.95 |
| 1820-0634 | Factory 4.1 system, anodized w/ MegaBomb header | $899.95 |
| 1820-0635 | Factory 4.1C (carbon fiber) system | $899.95 |
| 1820-0636 | Factory 4.1C (carbon fiber) system w/ MegaBomb header | $999.95 |
| 1821-0318 | Factory 4.1 slip-on muffler, natural, titanium mid-pipe | $399.95 |
| 1821-0319 | Factory 4.1 slip-on muffler, anodized, titanium mid-pipe | $399.95 |
| 1821-0320 | Factory 4.1C (carbon fiber) slip-on muffler | $499.95 |
| 1821-0688 | Power Core 4 slip-on muffler - To be used with stock header | $299.95 |
| 1821-0459 | Ti PowerCore slip-on muffler, natural - To be used with stock header | $349.95 |
| 1821-0460 | Ti PowerCore slip-on muffler, anodized - To be used with stock header | $349.95 |
| 1821-0683 | Q4 spark arrestor muffler - To be used with stock header | $359.95 |
| 1821-0758 | Q4 Ti spark arrestor muffler - To be used with stock or FMF header | $399.95 |
250 XCF/XCF-W 07-08
| Part # | Description | Retail |
|---|---|---|
| 1821-0318 | Factory 4.1 slip-on muffler, natural, titanium mid-pipe | $399.95 |
| 1821-0319 | Factory 4.1 slip-on muffler, anodized, titanium mid-pipe | $399.95 |
| 1821-0320 | Factory 4.1C (carbon fiber) slip-on muffler | $499.95 |
| 1821-0688 | Power Core 4 slip-on muffler - To be used with stock header | $299.95 |
| 1821-0459 | Ti PowerCore slip-on muffler, natural - To be used with stock header | $349.95 |
| 1821-0460 | Ti PowerCore slip-on muffler, anodized - To be used with stock header | $349.95 |
| 1821-0683 | Q4 spark arrestor muffler | $359.95 |
| 1821-0758 | Q4 Ti spark arrestor muffler - To be used with stock or FMF header | $399.95 |
400-525 00-03 (all)
| Part # | Description | Retail |
|---|---|---|
| FMF040145 | Ti 4 slip-on muffler - To be used with stock header | $249.95 |
| FMF045011 | PowerCore 4 spark arrestor muffler - To be used with stock of FMF header | $299.95 |
| 1821-0461 | Q2 spark arrestor muffler - To be used with stock header | $359.95 |
450-525 EXC/MXC/XC/XCW 04-07,SX 04-06
| Part # | Description | Retail |
|---|---|---|
| 1820-0206 | Factory 4.1 system, natural | $899.95 |
| 1820-0207 | Factory 4.1 system, anodized | $899.95 |
| 1820-0476 | Factory 4.1 system, natural supermoto w/ MegaBomb header | $999.95 |
| 1820-0208 | Factory 4.1C (carbon fiber) system | $999.95 |
| 1821-0234 | Factory 4.1 slip-on muffler, natural, stainless steel mid-pipe | $374.95 |
| 1821-0235 | Factory 4.1 slip-on muffler, anodized stainless steel mid-pipe | $374.95 |
| 1821-0236 | Factory 4.1 slip-on muffler, natural, titanium mid-pipe | $399.95 |
| 1821-0237 | Factory 4.1 slip-on muffler, anodized, titanium mid-pipe | $399.95 |
| 1821-0312 | Factory 4.1C (carbon fiber) slip-on muffler | $499.95 |
| 1821-0689 | PowerCore 4 slip-on muffler - To be used with stock header | $299.95 |
| 1821-0464 | Ti PowerCore slip-on muffler, natural - To be used with stock header | $349.95 |
| 1821-0506 | Ti PowerCore slip-on muffler, anodized - To be used with stock header | $349.95 |
| 1821-0684 | Q4 spark arrestor muffler - To be used with stock header | $359.95 |
| 1821-0685 | Q4 Ti spark arrestor muffler | $399.95 |
| 1821-0686 | Q4 Ti spark arrestor muffler | $399.95 |
450 XCRW 08
| Part # | Description | Retail |
|---|---|---|
| 1820-0746 | Factory 4.1 system w/ MegaBomb mid-pipe | $899.95 |
| 1820-0744 | Factory 4.1 system w/ PowerBomb, stainless steel | $699.95 |
| 1820-0745 | Factory 4.1 system w/ MegaBomb mid-pipe | $899.95 |
| 1820-0743 | Factory 4.1 system w/ PowerBomb, stainless steel | $699.95 |
| 1820-0748 | Factory 4.1C (carbon fiber) system w/ MegaBomb header | $999.95 |
| 1820-0747 | Factory 4.1C (carbon fiber) system w/ PowerBomb, stainless steel | $799.95 |
450 SXF 07-08
| Part # | Description | Retail |
|---|---|---|
| 1820-0637 | Factory 4.1 system, natural | $799.95 |
| 1820-0639 | Factory 4.1 system, natural w/ MegaBomb header | $899.95 |
| 1820-0638 | Factory 4.1 system, anodized | $799.95 |
| 1820-0640 | Factory 4.1 system, anodized w/ MegaBomb header | $899.95 |
| 1820-0641 | Factory 4.1C (carbon fiber) system | $899.95 |
| 1820-0642 | Factory 4.1C (carbon fiber) system w/ MegaBomb header | $999.95 |
| 1821-0695 | Factory 4.1 slip-on muffler, natural | $399.95 |
| 1821-0696 | Factory 4.1 slip-on muffler, anodized | $399.95 |
| 1821-0697 | Factory 4.1C (carbon fiber) slip-on muffler | $499.95 |
| 1821-0690 | Power Core 4 slip-on muffler - To be used with stock header | $299.95 |
| 1821-0691 | Power Core 4 Ti slip-on muffler - To be used with stock header | $349.95 |
| 1821-0692 | Power Core 4 Ti slip-on muffler, anodized - To be used with stock header | $349.95 |
| 1821-0693 | Q4 spark arrestor muffler | $359.95 |
| 1821-0694 | Q4 Ti spark arrestor muffler | $399.95 |
530 XCRW 08
| Part # | Description | Retail |
|---|---|---|
| 1820-0749 | Factory 4.1 system w/ PowerBomb, stainless | $699.95 |
| 1820-0750 | Factory 4.1 system w/ PowerBomb, anodized | $699.95 |
| 1820-0751 | Factory 4.1 system w/ MegaBomb | $899.95 |
| 1820-0752 | Factory 4.1 system w/ MegaBomb, anodized | $899.95 |
| 1820-0753 | Factory 4.1 system w/ PowerBomb, stainless | $799.95 |
| 1820-0754 | Factory 4.1 system w/ MegaBomb | $999.95 |
640 Adventurer 06
| Part # | Description | Retail |
|---|---|---|
| 1821-0682 | Q2 spark arrestor muffler | $359.95 |
950 Adventurer 04-05
| Part # | Description | Retail |
|---|---|---|
| 1821-0687 | Q4 Ti spark arrestor muffler set - Two pieces. | $799.95 |
| 1821-0174 | Q muffler | $599.95 |
950 Adventure/Super Enduro R/Supermoto 04-07
| Part # | Description | Retail |
|---|---|---|
| 1821-0799 | Ti Factory 4.1 slip-on mufflers - Two pieces. | $799.95 |
Descriptions and notes
FOR KTM 4-STROKES
FMF040145: To be used with FMF mid-pipe.
This item appears on page 494 of the OffRoad Catalog