FMF PowerBomb Header
M02-091213 (MFG #: 041583)
$299.99
Sale price
$299.99
Regular price
$299.99
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FMF PowerBomb Header for Honda Sportrax 400 ATV
FMF PowerBomb Header for Honda Sportrax 400 ATV
$299.99
Sale price
$299.99
Regular price
$299.99
SKU:M02-091213
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Description
The redesigned PowerBomb is a four-stroke header that incorporates FMF’s patented PowerBomb module at a precise location in the initial stage of the header. By positioning this “Bomb” at a key point in the system, increased performance and flow is achieved through the expansion and contraction of exhaust sonics through the system. Result is a flow increase of nearly 10%! The outer chamber in the Powerbomb allows the air to expand, cool and ramp back up at a higher velocity. Additionally, the PowerBomb is a “pre-muffler” of sorts which helps to lower the bikes sound output by providing more sound absorbing surface area for the sound medium (exhaust gases). On some models, you can choose between a moto or supercross version. The supercross version is designed for more low to mid-range power where the moto version is focused in the mid to upper RPM range.
FEATURES
- Position "Bomb" increases performance; horsepower is increased as much as 10%
- Act as a "pre-muffler" helping to lower the decibel output
- the expansion and contraction of exhaust sonics through the system causes increased flow
- A perfect fit with any FMF muffler
- Quality construction for maximum durability
Technical Specifications
- MFG. Part Number 041583
Vehicle Information
Honda Sportrax 400 ATV (1999-2008)
The Honda Sportrax 400, also known as the TRX400EX, is a renowned sport ATV produced from 1999 to 2008. It features a robust 397cc (or 398cc standard piston size) dry-sump, air-cooled, four-stroke, single-cylinder engine, derived from the Honda XR400R motorcycle. This engine typically delivered 25 to 28 horsepower, utilizing a Radial Four-Valve Combustion Chamber (RFVC) for optimal combustion efficiency and torque, specifically tuned for ATV performance.
While primarily offered as a single model, the Sportrax 400 underwent significant updates. Initially named the Honda FourTrax 400EX (1999-2000), it became the Honda Sportrax TRX400EX from 2001 onwards, with minor graphic and color changes in between. The most substantial upgrade occurred in 2005, often considered a "second generation," introducing a reverse gear, new bodywork, and suspension enhancements. A further facelift in 2008 brought new plastics, a redesigned seat, a reinforced frame, and revised suspension settings, improving ergonomics and durability.
Q: How can I be sure this part fits my Honda Sportrax 400?
A: To guarantee a perfect fit, please use the year and edition selector at the top of this page to specify your exact model.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Initially at 150 km or 20 hours; then every 1 000 km or 100 hours | The oil filter should always be replaced when changing the oil. More frequent changes are required in very dusty conditions. |
| Belt | Not applicable | This model is equipped with a manual transmission and a drive chain, not a belt. The drive chain requires regular inspection and maintenance. |
| Spark Plug | Initially inspect, clean, and adjust at 150 km or 20 hours; then inspect, clean, adjust, or replace if necessary every 1 000 km or 100 hours | Some guides suggest replacement every 30 hours for off-road vehicles. Regularly inspect for wear or fouling. |
| Air Filter | Clean every 1 000 km or 100 hours | More frequent cleaning in dusty conditions. For recreational use, clean or replace every 10-15 hours. |
| Coolant | Inspect or replace if necessary every 1 000 km or 100 hours | The cooling system should be inspected annually. |