FMF Racing PowerBomb Header Stainless Steel Yamaha YZ450F/WR450F 2003-2006

  
NOTE: Image is for reference only, actual product may vary slightly depending on your specific application. The redesigned Moto 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 waves as they pass through the system.

The result is a flow increase of nearly 10% at middle to upper RPM ranges which is perfect for outdoor moto riding! The outer chamber in the PowerBomb allows the air to expand, cool and ramp back up at a higher velocity as it passes through this section. Additionally, the PowerBomb also acts as a pre-muffler of sorts which helps to lower the bike's sound output by providing more sound absorbing surface area within the exhaust. Only fits machines equipped with FMF muffler.

Moto PowerBomb header designed specifically for outdoor MX riding for more punch at higher revs. Fabricated using alloys made to FMF's specifications. Pre-muffler function softens exhaust noises without compromising engine power.

NOTE: Only fits machines equipped with FMF mufflers. This item fits the following applications. We guarantee your satisfaction, that's why our team works hard to get your gear to your door as fast as possible.