Description
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)