Description
- Used by professional race teams such as Factory KTM, Yamaha of Troy and Star Racing
- Horsepower gains throughout RPM range
- Titanium muffler, endcap, and mid pipe
- Titanium MegaBomb header
- Blue anodized finish
The Factory 4.1 system is FMF Racing’s premier performance exhaust system. The 4.1 system comes with the choice of the Megabomb or Powerbomb header. Both systems guarantee horsepower gains throughout the RPM range and are the lightest titanium systems available
041299 made by FMF
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