FMF Racing Stainless PowerBomb Header 044225 for Yamaha YZ450F/WR450F

The FMF Racing Stainless PowerBomb Header 044225 is a four-stroke header that integrates FMF’s patented PowerBomb module at a precise location in the initial stage of the header, delivering a reported flow boost of nearly 10% that helps your Yamaha wake up sooner off the throttle.

Built from durable stainless steel, this header resists corrosion and stands up to tough riding conditions. The PowerBomb design features an outer chamber where exhaust pulses expand and cool before ramping back up to a higher velocity, promoting improved exhaust scavenging and overall engine efficiency.

In addition to improving flow, the PowerBomb acts as a pre-muffler by providing extra surface area for the exhaust sound medium, contributing to a quieter overall sound output without sacrificing performance.

Designed to fit Yamaha models, the 044225 header is a direct replacement for specific Yamaha configurations: YZ450F (2007–2009) and WR450F (2007–2015). It’s engineered for a precise fit on these bikes, with straightforward installation for riders familiar with exhaust work.

• Material: Stainless Steel
• Part Number: 044225
• Applications: Yamaha YZ450F (2007–2009); WR450F (2007–2015)
• Key benefits: improved exhaust flow, enhanced throttle response, and reduced sound output via the PowerBomb chamber

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.

Upgrade your Yamaha motorcycle with the FMF Racing S/S Powerbomb Header, Part #044225. Crafted from durable stainless steel, this header enhances exhaust flow and boosts engine performance. Its precise engineering ensures a perfect fit for Yamaha models, providing improved throttle response and power output. The header's robust construction offers longevity and resistance to corrosion, making it suitable for both casual riding and competitive use. Installation is straightforward, allowing riders to maximize their bike's potential with minimal effort. Trust FMF Racing’s reputation for quality and performance with this high-quality header designed specifically for Yamaha motorcycles.

Features:

• Constructed from stainless steel for durability and corrosion resistance

• Designed to improve exhaust flow and engine performance

• Precise fit for Yamaha motorcycles to ensure optimal compatibility

• Enhances throttle response and power output

• Easy to install, suitable for both casual riders and racers