|DESCRIPCIÓN: 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.