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 showcases advanced 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 pronounced power gains across the RPM range and substantial weight reduction, utilising aerospace-grade materials and precise American manufacturing. Ideal for competitive riding, it includes a carbon end cap and incorporates the latest features for rapid tuning and consistent durability.

Features

• Incorporates FMF Resonance Chamber Technology™ for optimised performance
• Compact design positioned closer to the motor for improved mass centralisation and reduced crash exposure
• Constructed with aerospace-grade proprietary blend materials for maximum durability and weight savings
• Natural aluminium muffler with carbon fibre end cap for a premium finish
• Delivers significant power gains throughout the entire RPM spectrum
• Features the new Rapid Tuning System (RTS) 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

Specifications

• 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

Vehicle Fitment

Yamaha

• WR250F (2020–2021)