FMF Powerbomb Header For Yamaha 044176 ADV Dualsport BBR Big Bore Cylinder Available Color:Dark Grey Red BBR Big Bore Cylinder Available HERE HUSQVARNA WR 125 2T 1997 2007 HUSQVARNA WR 250 2T 1997 2007 SUZUKI RM 125 1999 2011 SUZUKI RM 250 1999 2011 SUZUKI RM Z 250 2007 2017 SUZUKI RM Z 450 2005 2017 SUZUKI RMZX 2010 YAMAHA WR 125 2T 1997 2007 YAMAHA WR 250 2T 1997 2007 YAMAHA WR 426 2000 2002 YAMAHA WRF 250 2005 2006 YAMAHA WRF 400 2000 2002 YAMAHA WRF 450 2005 2006 YAMAHA YZ 125 1997 2008 YAMAHA YZ 250 1997 2008 YAMAHA YZ 250 F 2001 2006 YAMAHA YZ 450 F 2001 2006 YAMAHA YZF 426 2000 2002 Powerbomb increases horsepower up to 10% Powerbomb per muffler lowers sound output