Factory 4.1 RCT Exhaust Silencer 05-17 Honda CRF 450 X - FMF 041517

The FMF Factory 4.1 RCT Stainless Slip-On with Carbon End Cap combines cutting-edge Resonance Chamber Technology™ with a refined, compact design. Engineered with aerospace-grade materials and manufactured in Southern California, this slip-on delivers significant power gains throughout the rev range, substantial weight savings, and optimised mass centralisation for enhanced handling. It features a sleek natural aluminium muffler paired with a carbon end cap and includes both a spark arrestor and a 94dB quiet insert.

Features

• Incorporates the latest FMF Resonance Chamber Technology™ (RCT) both internally and externally


• Factory Forward Engineering–reduced muffler length, optimised for improved mass centralisation and crash resistance


• Aerospace grade materials for maximum durability and performance


• Natural aluminium muffler with carbon fibre end cap for premium aesthetics and reduced weight


• Delivers substantial power gains across the entire RPM range


• Massive reduction in overall weight for improved handling


• Rapid Tuning System (RTS) for easy adjustments


• Screen-type spark arrestor and 94dB quiet insert included


• Manufactured entirely in Southern California


• Closed course use only

Specifications

• FMF Item ID: 041517


• Type: Slip-On


• Configuration: Single


• Construction: Aluminium


• Finish: Natural


• Midpipe: Stainless Steel


• Endcap: Carbon fibre


• Spark Arrestor: Screen insert (included)


• Quiet Insert: 94dB insert (included)


• Weight: 5 lbs


• Carburettor Warning: No

Vehicle Fitment

Honda

• CRF450X (2005–2009, 2012–2017)