Factory 4.1 RCT Exhaust Silencer 25-26 Honda CRF 250 R RX - FMF 041618

Delivering massive performance gains across the RPM range, the FMF Factory 4.1 RCT Stainless Slip-On with Carbon End Cap uses advanced Resonance Chamber Technology™ and Factory Forward Engineering to move the muffler closer to the engine. This construction enhances mass centralisation and reduces susceptibility to crash damage thanks to a shorter overall length. Precision built from aerospace-grade materials and manufactured in Southern California, this slip-on provides significant weight savings, rapid tuning features, and a carbon end cap for ultimate strength and style.

Features

• Incorporates FMF Resonance Chamber Technology™ for optimum power and sound


• Engineered for improved mass centralisation and reduced crash damage


• Constructed from premium aerospace-grade aluminium and stainless steel


• Lightweight design with carbon end cap for enhanced durability


• Includes screen-type spark arrestor and 94dB quiet insert as standard


• RTS (Rapid Tuning System) for easy adjustments


• 100% made in the USA


• Closed course use only

Specifications

• Item ID: 041618


• Type: Slip-On


• Configuration: Single


• Muffler Construction: Aluminium, natural finish, grey anodised


• End Cap: Carbon fibre


• Midpipe Material: Stainless steel


• Spark Arrestor: Screen insert included


• Quiet Insert: 94dB insert included


• Carb Warning: No


• Intended Use: Closed course

Vehicle Fitment

HONDA

• CRF250R (2025–2026)


• CRF250RX (2025–2026)