The PowerBomb has been redesigned as a four-stroke header that incorporates FMF's patented PowerBomb module at an exact location in the initial stage of the header.
By positioning this "Bomb" at a key point in the system, the expansion and contraction of exhaust sonics through the system increases the performance and flow.
There 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.