Factory 4.1 RCT Exhaust Silencer 20-21 Yamaha WR 250 F - FMF 044473
The FMF Racing Factory 4.1 RCT Stainless Slip-On Exhaust with Carbon End Cap features FMF Resonance Chamber Technology for maximised engine performance and minimised crash vulnerability. Designed with Factory Forward Engineering to centralise mass, this slip-on system delivers power gains across the RPM range and weight reduction, utilising aerospace-grade materials and American manufacturing. It includes a carbon end cap and incorporates a Rapid Tuning System for rapid tuning and consistent durability. Features include Resonance Chamber Technology, a compact design for improved mass centralisation and reduced crash exposure, aerospace-grade proprietary blend materials for durability and weight savings, natural aluminium muffler with carbon fibre end cap, significant power gains throughout the RPM spectrum, and the Rapid Tuning System for easy adjustments. Includes a screen spark arrestor and a 94dB quiet insert for sound and emission compliance. Designed for closed course competition use only. Item ID: 044473. Type: Slip-On. Configuration: Single. Construction material: Aluminium. Finish: Natural. Mid-pipe material: Stainless steel. End cap material: Carbon fibre. Spark arrestor: Screen insert (included). Quiet insert: 94dB insert (included). Weight: 7.1 lbs (3.22 kg). Carb warning: Yes. Manufacturer: FMF Exhausts.
- SKU
- 06-9949.FMF.FCT
- Brand
- FMF Exhausts
- Availability
- In Stock (2)
FULL DESCRIPTION
FMF Racing Factory 4.1 RCT Exhaust Silencer with Carbon End Cap
Experience enhanced performance and durability with the FMF Racing Factory 4.1 RCT Stainless Slip-On Exhaust. This system features advanced FMF Resonance Chamber Technology™ to maximize engine output and minimize vulnerability. Its Factory Forward Engineering centralizes mass for improved handling and reduced crash impact. Precision manufactured in the USA using aerospace-grade materials, this slip-on system provides significant power gains across the entire RPM range and substantial weight reduction.
Key Features:
- FMF Resonance Chamber Technology™ for optimized performance
- Compact design moves mass closer to the motor, enhancing centralization and reducing crash exposure
- Constructed from aerospace-grade proprietary blend materials for maximum durability and weight savings
- Natural aluminum muffler complemented by a carbon fiber end cap
- Delivers significant power gains throughout the entire RPM spectrum
- Features the Rapid Tuning System (RTS) for straightforward adjustments
- Includes a screen spark arrestor and a 94dB quiet insert for compliance
- Designed for closed course competition use only
Specifications:
- Type: Slip-On
- Configuration: Single
- Muffler Construction Material: Aluminum
- Muffler Finish: Natural
- Mid-pipe Material: Stainless Steel
- End Cap Material: Carbon Fiber
- Spark Arrestor: Screen insert (included)
- Quiet Insert: 94dB insert (included)
- Weight: 7.1 lbs (3.22 kg)
- CARB Warning: Yes


