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Offroad High Performance Aftermarket MX Exhaust Pipe
Honda Motorcycle - CRF250R CRF 250R CRF250 CRF 250 - Man # 021017 - years 2004 2005 2006 2007 2008
Available in Stainless, Anodized and Carbon. Dual and Regular - and Megabomb Header. Also available for CRF250X in anodized.
The Factory 4.1 is FMF Racing’s premier performance exhaust system incorporating every conceivable technological advantage taken from the thirty plus years of our racing heritage. Featuring proprietary trade secrets such as the uniquely designed Chamber Core and exclusive PowerBomb header, the Factory4.1 is guaranteed to produce more horsepower throughout the entire RPM range! The impressive gains observed on the dyno do not give justice to the power that’s put to the ground. After all, would Factory KTM or Yamaha of Troy use anything but the very best performing exhaust systems?
More than “just another race muffler”, the Factory 4.1 has a long list of features that may go unnoticed. FMF pioneered “Factory Forward” engineering; moving the muffler further forward in the frame, shortening the midpipe and muffler length to centralize mass and lower the center of gravity for improved handling. Take the angle cut canister – a distinct look that separates FMF from the pack. There is our exhaust port flange that transmits less vibration and puts less tension on the header. There is our proprietary muffler packing incorporating various substrates of wire mesh, high density fabrics and advanced sound absorption material – FMF’s packing is arguably the best in the industry. Where others skimp, FMF beefs it up to give you unmatched reliability.
Anyone can make a bolt on system, but not anyone can give you the innovations and patent pending technology FMF offers or the quality from making each exhaust ourselves. FMF Racing is performance. Bolt on a Factory 4.1 and FEEL THE POWER!
Complete system with titanium PowerBomb header and midpipe; except where noted. Muffler available in natural titanium or blue anodized finish.
- The lightest full system available.
- Superior power and performance – horsepower improved throughout RPM range.
- Features exclusive proprietary Chamber Core and PowerBomb technology.
- Factory Forward Engineering centralizes mass, improves handling.
- Ti or Carbon muffler with titanium endcaps, midpipe 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.
Available for the following systems in either stainless, anodized and carbon.
06-08 Dual Stainless Anodized Carbon
06-08 Stainless Anodized Carbon
04-05 Stainless Anodized Carbon
06-08 w/MB Header Stainless Anodized Carbon
04-07 CRF250X Anodized
Off road High Performance Aftermarket MX Exhaust Pipes
Honda Motor cycle - CRF250R CRF 250R - years 04 05 06 07 08
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