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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 TRX450R ATV (2006-2014)
The Honda TRX450R, produced from 2006 to 2014, is a high-performance sport ATV renowned for its racing capabilities and robust 449cc liquid-cooled, single-cylinder, four-stroke engine with a Unicam cylinder head. This model range is defined by a significant overhaul introduced in 2006, which established its core specifications for the remainder of its production.
The 2006 model year marked a pivotal second generation for the TRX450R. Key improvements included an increased compression ratio (12.0:1), a revised bore and stroke (96.0 mm x 62.0 mm), and a more aggressive cam profile. The carburetor was updated to a 40mm Keihin FCR flat-slide with TPS for better throttle response. Additionally, the TRX450ER, an electric-start variant, was introduced, offering a convenient alternative to the standard kick-start model. Chassis and suspension also received updates, including an extended swingarm and increased rear suspension travel. From 2006 to 2014, the engine and chassis remained largely consistent, with subsequent years primarily featuring minor cosmetic changes like new color options. Q: How do I ensure I select the correct parts for my TRX450R?
A: Always use the year and edition selector at the top of the page to confirm compatibility with your specific Honda TRX450R (2006-2014) model.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Change every 100 hours, 1 000 km, or 12 months, whichever comes first. | The oil filter should be replaced with every oil change. For racing conditions, some sources suggest halving this interval. |
| Air Filter | Inspect every 10-15 hours of riding. | Clean using an air filter cleaner, rinse with warm water, dry completely, and re-oil. Replace if worn, damaged, or remains dirty after cleaning. Inspect more frequently in dusty conditions. |
| Spark Plug | Inspect regularly. | Replace if it shows signs of wear, damage, oiliness, or excessive carbon build-up to maintain efficient combustion. No specific replacement interval is consistently provided. |
| Drive Chain | Check, adjust, and lubricate as part of pre-ride inspection. | The TRX450R uses a drive chain, not a belt. More frequent maintenance is necessary in severe conditions (e.g., dusty or muddy areas). Recommended chain slack is 25-35 mm. |
| Coolant | Replace every 96 000 km or 5 years, whichever comes first. | Check coolant level regularly. Use Honda All Season Antifreeze/Coolant Type 2, a 50/50 mixture of antifreeze and water. |