FMF PowerBomb Header 040020 XR600R/ XR650L 040020 FMF-H425H Airflite™ Dark Helmet Molded polyurethane foam is approximately

Molded polyurethane foam is approximately 1" thick

High-impact plastic housing

2007-2008 Yamaha YFM 660 FG Grizzly 4x4 - - 2005-2008 Yamaha YFM 660 FA Grizzly 4x4 - - 2003-2004 Yamaha YFM 660 F Grizzly 4x4 - -

Waterproof heating elements

FMF PowerBomb Header 040020 XR600R/ XR650L 040020 FMF-H425H Airflite™ Dark Helmet Molded polyurethane foam is approximatelyUtilize 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.