Description
KTM/FMF Factory 4.1 RCT Silencer 250/350/450 SX-F/XC-F 11-12
This brand new muffler design is the result of the collaboration between KTM USA Motorsports and FMF.
FMF RCT: Resonance Chamber Technology
A resonance chamber works like two rooms connected by an open doorway. If you were to slam the outside door on room number one, some of the sound and energy would be absorbed by that room, dampening those forces as they trave through the passage into room number two. This effet lowers decibels and increases the life of muffler packing. The chamber’s internal ducts increase volume for improved exhaust flow, resulting in power gains throughout the entire range of power.
Highlights:
- Patented core shape lowers sound level while maintaining maximum power output
- Patented canister shape increases internal volume for more sound absorbing material
- Patented chamber design to enhance and refine exhaust pressure
- Innovative rear endcap for simple installation of tuning tip inserts or spark arrestor
- Meets AMA and FIM sound requirements
- Compatible with stock or FMF header
- QuietCore 94dB insert included, spark arrestor available separately
- Maintenance made easy with the removal of 4 screws on the front endcap
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