FMF Racing® Stainless Steel PowerBomb Header/Head Pipe

2001-2002 Yamaha WR426F/YZ426F & 1998-2000 WR400F/YZ400F

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. 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).

Features:

• 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

Finish:

• Stainless Steel

Fitment:

• 2001-2002 Yamaha WR426F/YZ426F

• 1998-2000 Yamaha WR400F/YZ400F