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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 Titanium Silencer For Yamaha WRF450 2016-2018 - Blue is part of the latest collection from FMF.
Features:
- The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology⢠both internally and externally
- In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
- The Factory 4.1 RCT is constructed from only aerospace grade materials that meet their exacting specifications and is manufactured 100% at their Southern California factory
- Massive Power gains throughout the RPM range.
- Huge weight savings
- RTS (Rapid Tuning System)
Specifications:
- End Cap Material: Carbon Fiber
- Material: Titanium
- Model: Factory 4.1 RCT
- Muffler Color/Finish: Anodized Blue
- Muffler Material: Titanium
- Pipe Material: Titanium
- Product Name: Muffler
- Type: Slip-On
- Units: Each
To fit:
- YAMAHA WR 450 F 2016 European Models
- YAMAHA WR 450 F 2017 American Models
- YAMAHA WR 450 F 2017 European Models
- YAMAHA WR 450 F 2018 Enduro GP European Models
- YAMAHA WR 450 F 2018 American Models
- YAMAHA WR 450 F 2018 European Models
- YAMAHA YZ 450 FX 2016 American Models
- YAMAHA YZ 450 FX 2017 American Models
- YAMAHA YZ 450 FX 2018 American Models
- YAMAHA YZ 450 F 2014 American Models
- YAMAHA YZ 450 F 2014 European Models
- YAMAHA YZ 450 F 2015 American Models
- YAMAHA YZ 450 F 2015 European Models
- YAMAHA YZ 450 F 2016 60th Anniversary European Models
- YAMAHA YZ 450 F 2016 American Models
- YAMAHA YZ 450 F 2016 European Models
- YAMAHA YZ 450 F 2017 American Models
- YAMAHA YZ 450 F 2017 European Models
- YAMAHA WR 450 F 2016 American Models
Manufacturer part number: 044409
View all FMF. View all Parts and spares.
Contents
Your package will include the following:
- 1 X FMF Factory 4.1 RCT Titanium Silencer For Yamaha WRF450 2016-2018 - Blue
To fit:
- YAMAHA WR 450 F 2016 American Models
- YAMAHA WR 450 F 2016 European Models
- YAMAHA WR 450 F 2017 American Models
- YAMAHA WR 450 F 2017 European Models
- YAMAHA WR 450 F 2018 Enduro GP European Models
- YAMAHA WR 450 F 2018 American Models
- YAMAHA WR 450 F 2018 European Models
- YAMAHA YZ 450 FX 2016 American Models
- YAMAHA YZ 450 FX 2017 American Models
- YAMAHA YZ 450 FX 2018 American Models
- YAMAHA YZ 450 F 2014 American Models
- YAMAHA YZ 450 F 2014 European Models
- YAMAHA YZ 450 F 2015 American Models
- YAMAHA YZ 450 F 2015 European Models
- YAMAHA YZ 450 F 2016 60th Anniversary European Models
- YAMAHA YZ 450 F 2016 American Models
- YAMAHA YZ 450 F 2016 European Models
- YAMAHA YZ 450 F 2017 American Models
- YAMAHA YZ 450 F 2017 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 Titanium Silencer For Yamaha WRF450 2016-2018 - Blue is part of the latest collection from FMF.
Features:
- The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology⢠both internally and externally
- In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
- The Factory 4.1 RCT is constructed from only aerospace grade materials that meet their exacting specifications and is manufactured 100% at their Southern California factory
- Massive Power gains throughout the RPM range.
- Huge weight savings
- RTS (Rapid Tuning System)
Specifications:
- End Cap Material: Carbon Fiber
- Material: Titanium
- Model: Factory 4.1 RCT
- Muffler Color/Finish: Anodized Blue
- Muffler Material: Titanium
- Pipe Material: Titanium
- Product Name: Muffler
- Type: Slip-On
- Units: Each
To fit:
- YAMAHA WR 450 F 2016 European Models
- YAMAHA WR 450 F 2017 American Models
- YAMAHA WR 450 F 2017 European Models
- YAMAHA WR 450 F 2018 Enduro GP European Models
- YAMAHA WR 450 F 2018 American Models
- YAMAHA WR 450 F 2018 European Models
- YAMAHA YZ 450 FX 2016 American Models
- YAMAHA YZ 450 FX 2017 American Models
- YAMAHA YZ 450 FX 2018 American Models
- YAMAHA YZ 450 F 2014 American Models
- YAMAHA YZ 450 F 2014 European Models
- YAMAHA YZ 450 F 2015 American Models
- YAMAHA YZ 450 F 2015 European Models
- YAMAHA YZ 450 F 2016 60th Anniversary European Models
- YAMAHA YZ 450 F 2016 American Models
- YAMAHA YZ 450 F 2016 European Models
- YAMAHA YZ 450 F 2017 American Models
- YAMAHA YZ 450 F 2017 European Models
- YAMAHA WR 450 F 2016 American Models
Manufacturer part number: 044409
View all FMF. View all Parts and spares.
Contents
Your package will include the following:
- 1 X FMF Factory 4.1 RCT Titanium Silencer For Yamaha WRF450 2016-2018 - Blue
To fit:
- YAMAHA WR 450 F 2016 American Models
- YAMAHA WR 450 F 2016 European Models
- YAMAHA WR 450 F 2017 American Models
- YAMAHA WR 450 F 2017 European Models
- YAMAHA WR 450 F 2018 Enduro GP European Models
- YAMAHA WR 450 F 2018 American Models
- YAMAHA WR 450 F 2018 European Models
- YAMAHA YZ 450 FX 2016 American Models
- YAMAHA YZ 450 FX 2017 American Models
- YAMAHA YZ 450 FX 2018 American Models
- YAMAHA YZ 450 F 2014 American Models
- YAMAHA YZ 450 F 2014 European Models
- YAMAHA YZ 450 F 2015 American Models
- YAMAHA YZ 450 F 2015 European Models
- YAMAHA YZ 450 F 2016 60th Anniversary European Models
- YAMAHA YZ 450 F 2016 American Models
- YAMAHA YZ 450 F 2016 European Models
- YAMAHA YZ 450 F 2017 American Models
- YAMAHA YZ 450 F 2017 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.































