FMF Factory 4.1 RCT Aluminium Off-road SilencerHONDA 450 CRF 450 X (PE06) - 2005 - 2009 - 2012 - 2020Ref : 1821-1563 / 18211563

The FMF RCT (Resonance Chamber Technology) off-road silencer features a patented central shape that reduces noise levels while maintaining maximum output power.

• The internal conduits in the RCT system chambers increase the internal volume for improved exhaust flow, providing a power gain across the entire engine.
• The rear tip is equipped with a spark arrestor that is easy to install by removing four screws.
• Compatible with either stock or FMF headers.
• Meets AMA and FIM noise requirements.
• QuietCore insert of 94 dB included.
• Spark arrestor included in the silencer.
• Made in the USA.