{"product_id":"fmf-racing-yamaha-yz250f-06-09-yz450f-06-09-wr250f-07-13-450f-07-11-q4-s-a-muffler","title":"FMF Racing Yamaha YZ250F 06-09\/YZ450F 06-09\/WR250F 07-13\/450F 07-11 Q4 S\/A Muffler","description":"\u003cp\u003eA 4-Stroke header system that incorporates FMF's patented Power Bomb module at a precise location in the initial stage of the header system; by positioning the \"Bomb\" at this key point, the expansion and contraction of exhaust sonics through the system resulting in a flow increase of nearly 10%. The surface of the perforated core lets the sound exit into the absorbing material (steel wool packing) and then allows the air to expand, cool and ramp back up at higher air pressures (RPMs). The Power Bomb is a \"pre-muffler\" of sorts, which helps to lower the bike's sound output because it provides more sound-absorbing surface area to allow the exhaust gases to become absorbed.\u003c\/p\u003e\n\n\u003cp\u003eFitment:\n\u003cbr\u003eYamaha WR250F Base 2007\n\u003cbr\u003eYamaha WR250F Base 2008\n\u003cbr\u003eYamaha WR250F Base 2009\n\u003cbr\u003eYamaha WR250F Base 2010\n\u003cbr\u003eYamaha WR250F Base 2011\n\u003cbr\u003eYamaha WR250F Base 2012\n\u003cbr\u003eYamaha WR250F Base 2013\n\u003cbr\u003eYamaha WR450F Base 2007\n\u003cbr\u003eYamaha WR450F Base 2008\n\u003cbr\u003eYamaha WR450F Base 2009\n\u003cbr\u003eYamaha WR450F Base 2010\n\u003cbr\u003eYamaha WR450F Base 2011\n\u003cbr\u003eYamaha YZ250F Base 2006\n\u003cbr\u003eYamaha YZ250F Base 2007\n\u003cbr\u003eYamaha YZ250F Base 2008\n\u003cbr\u003eYamaha YZ250F Base 2009\n\u003cbr\u003eYamaha YZ450F Base 2006\n\u003cbr\u003eYamaha YZ450F Base 2007\n\u003cbr\u003eYamaha YZ450F Base 2008\n\u003cbr\u003eYamaha YZ450F Base 2009\u003c\/p\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Unknown\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: powersports\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: Compliant\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"FMF Racing","offers":[{"title":"Default Title","offer_id":46150800277657,"sku":"fmf044232","price":373.74,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0714\/2611\/3689\/files\/178c55cabfd458bde7afdb6f89cebd0c_b8b4daf3-d1cd-4a81-8cd0-9e398400b920.jpg?v=1770816549","url":"https:\/\/msvracingpowersports.com\/products\/fmf-racing-yamaha-yz250f-06-09-yz450f-06-09-wr250f-07-13-450f-07-11-q4-s-a-muffler","provider":"MSV Racing","version":"1.0","type":"link"}