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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.
Pay in 3 interest-free payments with:
-
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.
Seen it cheaper? We'll beat it
Product description
The FMF Factory 4.1 RCT Stainless Steel Silencer For Yamaha WRF450 2019-2024 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: Aluminum| Stainless Steel
- Model: Factory 4.1 RCT
- Muffler Color/Finish: Raw
- Muffler Material: Aluminum
- Pipe Material: Stainless Steel
- Product Name: Muffler
- Type: Slip-On
- Units: Each
To fit:
- YAMAHA WR 450 F 2020 European Models
- YAMAHA WR 450 F 2021 All Models
- YAMAHA WR 450 F 2022 All Models
- YAMAHA WR 450 F 2023 All Models
- YAMAHA WR 450 F 2024 All Models
- YAMAHA YZ 450 FX 2019 American Models
- YAMAHA YZ 450 FX 2020 American Models
- YAMAHA YZ 450 FX 2021 American Models
- YAMAHA YZ 450 FX 2022 American Models
- YAMAHA YZ 450 FX 2023 American Models
- YAMAHA YZ 450 FX 2025 American Models
- YAMAHA YZ 450 F 2018 American Models
- YAMAHA YZ 450 F 2018 European Models
- YAMAHA YZ 450 F 2019 American Models
- YAMAHA YZ 450 F 2019 European Models
- YAMAHA YZ 450 F 2020 American Models
- YAMAHA YZ 450 F 2020 European Models
- YAMAHA YZ 450 F 2021 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2021 All Models
- YAMAHA YZ 450 F 2022 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2022 All Models
- YAMAHA YZ 450 F 2023 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2023 All Models
- YAMAHA YZ 450 F 2024 50th Anniversary Edition All Models
- YAMAHA YZ 450 F 2024 All Models
- YAMAHA YZ 450 F 2025 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2025 All Models
- YAMAHA WR 450 F 2019 European Models
Manufacturer part number: 044443
View all FMF. View all Parts and spares.
Contents
Your package will include the following:
- 1 X FMF Factory 4.1 RCT Stainless Steel Silencer For Yamaha WRF450 2019-2024
To fit:
- YAMAHA WR 450 F 2019 European Models
- YAMAHA WR 450 F 2020 European Models
- YAMAHA WR 450 F 2021 All Models
- YAMAHA WR 450 F 2022 All Models
- YAMAHA WR 450 F 2023 All Models
- YAMAHA WR 450 F 2024 All Models
- YAMAHA YZ 450 FX 2019 American Models
- YAMAHA YZ 450 FX 2020 American Models
- YAMAHA YZ 450 FX 2021 American Models
- YAMAHA YZ 450 FX 2022 American Models
- YAMAHA YZ 450 FX 2023 American Models
- YAMAHA YZ 450 FX 2025 American Models
- YAMAHA YZ 450 F 2018 American Models
- YAMAHA YZ 450 F 2018 European Models
- YAMAHA YZ 450 F 2019 American Models
- YAMAHA YZ 450 F 2019 European Models
- YAMAHA YZ 450 F 2020 American Models
- YAMAHA YZ 450 F 2020 European Models
- YAMAHA YZ 450 F 2021 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2021 All Models
- YAMAHA YZ 450 F 2022 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2022 All Models
- YAMAHA YZ 450 F 2023 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2023 All Models
- YAMAHA YZ 450 F 2024 50th Anniversary Edition All Models
- YAMAHA YZ 450 F 2024 All Models
- YAMAHA YZ 450 F 2025 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2025 All 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 Stainless Steel Silencer For Yamaha WRF450 2019-2024 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: Aluminum| Stainless Steel
- Model: Factory 4.1 RCT
- Muffler Color/Finish: Raw
- Muffler Material: Aluminum
- Pipe Material: Stainless Steel
- Product Name: Muffler
- Type: Slip-On
- Units: Each
To fit:
- YAMAHA WR 450 F 2020 European Models
- YAMAHA WR 450 F 2021 All Models
- YAMAHA WR 450 F 2022 All Models
- YAMAHA WR 450 F 2023 All Models
- YAMAHA WR 450 F 2024 All Models
- YAMAHA YZ 450 FX 2019 American Models
- YAMAHA YZ 450 FX 2020 American Models
- YAMAHA YZ 450 FX 2021 American Models
- YAMAHA YZ 450 FX 2022 American Models
- YAMAHA YZ 450 FX 2023 American Models
- YAMAHA YZ 450 FX 2025 American Models
- YAMAHA YZ 450 F 2018 American Models
- YAMAHA YZ 450 F 2018 European Models
- YAMAHA YZ 450 F 2019 American Models
- YAMAHA YZ 450 F 2019 European Models
- YAMAHA YZ 450 F 2020 American Models
- YAMAHA YZ 450 F 2020 European Models
- YAMAHA YZ 450 F 2021 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2021 All Models
- YAMAHA YZ 450 F 2022 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2022 All Models
- YAMAHA YZ 450 F 2023 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2023 All Models
- YAMAHA YZ 450 F 2024 50th Anniversary Edition All Models
- YAMAHA YZ 450 F 2024 All Models
- YAMAHA YZ 450 F 2025 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2025 All Models
- YAMAHA WR 450 F 2019 European Models
Manufacturer part number: 044443
View all FMF. View all Parts and spares.
Contents
Your package will include the following:
- 1 X FMF Factory 4.1 RCT Stainless Steel Silencer For Yamaha WRF450 2019-2024
To fit:
- YAMAHA WR 450 F 2019 European Models
- YAMAHA WR 450 F 2020 European Models
- YAMAHA WR 450 F 2021 All Models
- YAMAHA WR 450 F 2022 All Models
- YAMAHA WR 450 F 2023 All Models
- YAMAHA WR 450 F 2024 All Models
- YAMAHA YZ 450 FX 2019 American Models
- YAMAHA YZ 450 FX 2020 American Models
- YAMAHA YZ 450 FX 2021 American Models
- YAMAHA YZ 450 FX 2022 American Models
- YAMAHA YZ 450 FX 2023 American Models
- YAMAHA YZ 450 FX 2025 American Models
- YAMAHA YZ 450 F 2018 American Models
- YAMAHA YZ 450 F 2018 European Models
- YAMAHA YZ 450 F 2019 American Models
- YAMAHA YZ 450 F 2019 European Models
- YAMAHA YZ 450 F 2020 American Models
- YAMAHA YZ 450 F 2020 European Models
- YAMAHA YZ 450 F 2021 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2021 All Models
- YAMAHA YZ 450 F 2022 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2022 All Models
- YAMAHA YZ 450 F 2023 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2023 All Models
- YAMAHA YZ 450 F 2024 50th Anniversary Edition All Models
- YAMAHA YZ 450 F 2024 All Models
- YAMAHA YZ 450 F 2025 Monster Energy Racing Edition All Models
- YAMAHA YZ 450 F 2025 All 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.
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