FMF 10-13 YZ250F P-BOMB HEADER S/S

Utilize FMF's patented module precisely located at the initial stage of the header

Position "Bomb" increases performance; horsepower is increased as much as 10%

Act as "pre-muffler" helping to lower the decibel output

The expansion and contraction of exhaust sonics through the system causes increased flow

Not for use with stock muffler.