98-02 YZF WRF400 P-BOM SS PIPE, FMF 040050 POWERBOMB HEADER

YAMAHA

• WR400 1998 – 2000
• WR426F 2001 – 2002
• YZ400F 1998 – 1999
• YZ426F 2000 – 2002

FMF 040050

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 are achieved through the expansion and contraction of exhaust sonics through the system. The 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 bike’s sound output by providing more sound-absorbing surface area for the sound medium (exhaust gases). On some models, you can choose between a moto or supercross version. The supercross version is designed for more low to mid-range power where the moto version is focused on the mid to upper RPM range.

Notice: Closed Course Use Only
Item ID: 040050
Type: Header
Carb Warning: No
Header Const: Stainless Steel
Header Type: PowerBomb
Version: Moto
Weight: 1.1 lbs.