01-06 YZF250 P-BOMB SS PIPE FMF 040073 POWERBOMB HEADER

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Yamaha WR250F WRF250 2007 - 2014 FMF: 040073 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 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: 040073 Type: Header Carb Warning: No Header Const: Stainless Steel Header Type: PowerBomb Version: Moto Weight: 1.4 lbs. Show more