FMF Power Bomb Header

Part Number: 044244
Material: Stainless Steel

• Up to 10% horsepower gain.
• Proprietary technology to increase flow.
• Acts as a "pre-muffler" tp lower sound output up to 1.5 dB.
• Modular exhaust port flange for reliability and less vibration.

​​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.

Fits: 2007-09 Yamaha YZ250F

Note: Power Bomb Headers are for use with FMF Racing mufflers and exhaust systems only. Not compatible with stock systems.