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Important – Off-Road Use Only: This exhaust is supplied for off-road / closed-course use only and is not approved for use on public roads unless clearly stated otherwise.
It is the customer’s responsibility to ensure the product is suitable and compliant for their intended use, including any applicable UK/EU noise and emissions requirements and any vehicle type-approval requirements.
Please note: Some images may be for illustrative purposes only.
-
Important – Off-Road Use Only: This exhaust is supplied for off-road / closed-course use only and is not approved for use on public roads unless clearly stated otherwise.
It is the customer’s responsibility to ensure the product is suitable and compliant for their intended use, including any applicable UK/EU noise and emissions requirements and any vehicle type-approval requirements.
Please note: Some images may be for illustrative purposes only.
Product description
The FMF FACTORY 4.1 RCT Silencer For Yamaha WRF250 2020-2021 is part of the latest collection from FMF.
Features:
- FACTORY 4.1 RCT SLIP-ON MUFFLERS
- RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
- Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
- FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
- Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
- Compatible with stock header or FMF header
- QuietCore 94 dB insert included
- Spark arrestor included in muffler
- Available in natural titanium or blue anodized finish with titanium or carbon fiber end caps
- Meet AMA and FIM sound requirements FACTORY 4.1 RCT STAINLESS SL (SLIP-ON) W/ CARBON END CAP
Specifications:
- Color/Finish: Black| Natural
- End Cap Color/Finish: Black
- End Cap Material: Carbon Fiber
- End Cap Style: Conical
- Features: with Spark Arrestor
- Material: Aluminum| Carbon Fiber
- Model: Factory 4.1 RCT
- Muffler Color/Finish: Natural
- Muffler Material: Aluminum
- Pipe Material: Stainless Steel
- Product Name: Exhaust System
- Type: Slip-On
To fit:
- YAMAHA WR 250 F 2021 European Models
- YAMAHA WR 250 F 2020 European Models
Manufacturer part number: 044473
View all FMF. View all Parts and spares.
Contents
Your package will include the following:
- 1 X FMF FACTORY 4.1 RCT Silencer For Yamaha WRF250 2020-2021
To fit:
- YAMAHA WR 250 F 2020 European Models
- YAMAHA WR 250 F 2021 European Models

GhostBikes are now stocking a full range of FMF pipes for a wide range of off road 2 stroke and 4 stroke makes and models! Get more power from your bike with an FMF exhaust system!
FMF is one of the world's leading manufacturers of aftermarket motorcycle exhaust systems. Their exhausts are designed to increase the performance of your bike while also giving it a more aggressive sound. FMF offers a wide range of exhaust options, including full systems, slip-on mufflers, and head pipes, for various makes and models of off-road and motocross motorcycles.
Product description
The FMF FACTORY 4.1 RCT Silencer For Yamaha WRF250 2020-2021 is part of the latest collection from FMF.
Features:
- FACTORY 4.1 RCT SLIP-ON MUFFLERS
- RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
- Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
- FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
- Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
- Compatible with stock header or FMF header
- QuietCore 94 dB insert included
- Spark arrestor included in muffler
- Available in natural titanium or blue anodized finish with titanium or carbon fiber end caps
- Meet AMA and FIM sound requirements FACTORY 4.1 RCT STAINLESS SL (SLIP-ON) W/ CARBON END CAP
Specifications:
- Color/Finish: Black| Natural
- End Cap Color/Finish: Black
- End Cap Material: Carbon Fiber
- End Cap Style: Conical
- Features: with Spark Arrestor
- Material: Aluminum| Carbon Fiber
- Model: Factory 4.1 RCT
- Muffler Color/Finish: Natural
- Muffler Material: Aluminum
- Pipe Material: Stainless Steel
- Product Name: Exhaust System
- Type: Slip-On
To fit:
- YAMAHA WR 250 F 2021 European Models
- YAMAHA WR 250 F 2020 European Models
Manufacturer part number: 044473
View all FMF. View all Parts and spares.
Contents
Your package will include the following:
- 1 X FMF FACTORY 4.1 RCT Silencer For Yamaha WRF250 2020-2021
To fit:
- YAMAHA WR 250 F 2020 European Models
- YAMAHA WR 250 F 2021 European Models

GhostBikes are now stocking a full range of FMF pipes for a wide range of off road 2 stroke and 4 stroke makes and models! Get more power from your bike with an FMF exhaust system!
FMF is one of the world's leading manufacturers of aftermarket motorcycle exhaust systems. Their exhausts are designed to increase the performance of your bike while also giving it a more aggressive sound. FMF offers a wide range of exhaust options, including full systems, slip-on mufflers, and head pipes, for various makes and models of off-road and motocross motorcycles.































