FMF - ATV 4-Stroke Powerbomb Header

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• 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, the 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