BFMF Power Bomb Stainless Steel Header for 2004-2009 Honda CRF450XCRF450R ReviewbP PP FMF Power Bomb Stainless Steel Header for 2004-2009 Honda CRF450XCRF450R PHeader Const: Stainless SteelPHeader Type: PowerBombPUp to 10 horsepower gainPProprietary technology to increase flowPPre-muffler lowers sound output up to 1.