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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 Dual Silencer Packing Kit For 4.1 RCT - CRF Models is part of the performance exhaust range from FMF.
Owens-Corning fiberglass replacement packing keeps mufflers performing as they're meant to!
Please note: This packing kit only fits the 4.1 RCT FMF Silencer for the following models:
- HONDA CRF 450 R 2017
- HONDA CRF 250 R 2017
- HONDA CRF 250 R 2018
- HONDA CRF 450 R 2018
- HONDA CRF 450 R 2019
- HONDA CRF 250 R 2019
- HONDA CRF 450 R 2020
View all FMF Exhausts. View all Exhausts.
Contents
Your package will include the following:
- 1 X FMF Dual Silencer Packing Kit For 4.1 RCT - CRF 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 Dual Silencer Packing Kit For 4.1 RCT - CRF Models is part of the performance exhaust range from FMF.
Owens-Corning fiberglass replacement packing keeps mufflers performing as they're meant to!
Please note: This packing kit only fits the 4.1 RCT FMF Silencer for the following models:
- HONDA CRF 450 R 2017
- HONDA CRF 250 R 2017
- HONDA CRF 250 R 2018
- HONDA CRF 450 R 2018
- HONDA CRF 450 R 2019
- HONDA CRF 250 R 2019
- HONDA CRF 450 R 2020
View all FMF Exhausts. View all Exhausts.
Contents
Your package will include the following:
- 1 X FMF Dual Silencer Packing Kit For 4.1 RCT - CRF 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.































