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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 DEP Boost Header Pipe For Honda CRF450 2004-08 is part of the latest performance exhaust collection from DEP.
DEP offer after-market performance exhausts manufactured, by hand, in the UK and designed to enhance the power and replace the stock exhaust with a high-flow, free-flowing system that reduces back pressure and allows for better exhaust flow. DEP motorcycle exhausts feature a sporty and aggressive sound, and are available for a wide variety of both 2 and 4 stroke machines.
If you want improved performance and aesthetics, look no further than DEP!
Features:
- When you position the bomb at the key point in the system, it increases performance - and flow is achieved through the expansion and contraction of the exhaust sonics throught the system
- Horse power is increased by as much as 10%
- The ducted core allows the exhaust gases to exit into the bomb chamber - expand, cool and ramp back up at a higher velocity resulting in increased flow
- Additionally this helps to lower decibel output
- Made of Stainless Steel
- Laser Cut Stainless Flange
- CNC CL8 Stainless Tubing
- Noise Reducing Boost chamber - Increases Torque
Please note: Can only be used as part of a DEP full system.
Manufacturer part number: DEPH4412
View all DEP Exhausts. View all Exhausts.
Contents
Your package will include the following:
- DEP Boost Header Pipe For Honda CRF450 2004-08
To fit:
- Honda CRF450R 2004-08
Please note: Can only be used as part of a DEP full system.

GhostBikes are now stocking a full range of DEP pipes for a wide range of off road 2 stroke and 4 stroke makes and models! Get more power from your bike with a DEP exhaust system!
DEP manufacture high-performance exhaust systems for off-road, street and racing motorcycles. They offer a range of exhaust options, including full systems and slip-on mufflers, designed to improve the power and sound of your bike.
Product description
The DEP Boost Header Pipe For Honda CRF450 2004-08 is part of the latest performance exhaust collection from DEP.
DEP offer after-market performance exhausts manufactured, by hand, in the UK and designed to enhance the power and replace the stock exhaust with a high-flow, free-flowing system that reduces back pressure and allows for better exhaust flow. DEP motorcycle exhausts feature a sporty and aggressive sound, and are available for a wide variety of both 2 and 4 stroke machines.
If you want improved performance and aesthetics, look no further than DEP!
Features:
- When you position the bomb at the key point in the system, it increases performance - and flow is achieved through the expansion and contraction of the exhaust sonics throught the system
- Horse power is increased by as much as 10%
- The ducted core allows the exhaust gases to exit into the bomb chamber - expand, cool and ramp back up at a higher velocity resulting in increased flow
- Additionally this helps to lower decibel output
- Made of Stainless Steel
- Laser Cut Stainless Flange
- CNC CL8 Stainless Tubing
- Noise Reducing Boost chamber - Increases Torque
Please note: Can only be used as part of a DEP full system.
Manufacturer part number: DEPH4412
View all DEP Exhausts. View all Exhausts.
Contents
Your package will include the following:
- DEP Boost Header Pipe For Honda CRF450 2004-08
To fit:
- Honda CRF450R 2004-08
Please note: Can only be used as part of a DEP full system.

GhostBikes are now stocking a full range of DEP pipes for a wide range of off road 2 stroke and 4 stroke makes and models! Get more power from your bike with a DEP exhaust system!
DEP manufacture high-performance exhaust systems for off-road, street and racing motorcycles. They offer a range of exhaust options, including full systems and slip-on mufflers, designed to improve the power and sound of your bike.































