FMF PowerBomb Header Royal Days INCLUDE Two back zippered vents

Two back zippered vents

Extra strong clips fit over motorcycle leathers

cuffs and upper arms

Elasticized back

FMF PowerBomb Header Royal Days INCLUDE Two back zippered ventsThe redesigned PowerBomb is a four stroke header that incorporates FMFs 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