Factory 4.1 RCT Exhaust Silencer 19-23 Kawasaki KX 450 F X - FMF 042369

The FMF Racing Factory 4.1 RCT Stainless Slip-On with Carbon End Cap leverages advanced Resonance Chamber Technology™ to deliver exceptional power gains and reduced weight. Its compact design centralises mass by positioning the muffler closer to the engine, optimising both performance and handling. Precision-built in Southern California using aerospace-grade materials, this slip-on exhaust promises both durability and improved throttle response for competitive riders.

Features

• Incorporates FMF Resonance Chamber Technology™ internally and externally for optimal power output


• Shorter length reduces risk of crash damage and aids mass centralisation


• Aerospace-grade natural aluminium construction with carbon end cap


• Massive power gains throughout the RPM range


• Significant weight reduction over stock exhausts


• Includes the RTS (Rapid Tuning System) for quick adjustments


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


• Closed course use only

Specifications

• Type: Slip-On


• Configuration: Single


• Muffler Construction: Aluminium


• Finish: Natural


• Midpipe Material: Stainless Steel


• End Cap: Carbon Fibre


• Spark Arrestor: Screen insert (included)


• Quiet Insert: 94dB insert (included)


• Weight: 7.3 lbs (approx. 3.31 kg)


• Carb Warning: Not applicable

Vehicle Fitment

Kawasaki

• KX450F (2019–2023)


• KX450X (2019–2023)