{"product_id":"fmf-powercore-4-slip-on-muffler-yamaha-yfz450r","title":"FMF PowerCore 4 Slip-On Muffler - Yamaha YFZ450R","description":"\u003ch3\u003e✓ Fits\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eYamaha YFZ450R (2009-2026) and YFZ450X (2010-2011).\u003c\/strong\u003e PowerCore 4 slip-on muffler.\u003c\/p\u003e\n\u003ch3\u003e✓ About the PowerCore 4\u003c\/h3\u003e\n\u003cp\u003eFMF built the PowerCore 4 to add horsepower and torque across the entire power curve, a real, usable power increase that works for every style of riding. It balances performance and durability with an aluminum canister and stainless steel Hi-Flo end caps, and it includes a removable spark arrestor so you can run it where one is required.\u003c\/p\u003e\n\u003ch3\u003e✓ Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIncreases horsepower and torque throughout the entire power curve\u003c\/li\u003e\n\u003cli\u003eUsable power gains compatible with every riding style\u003c\/li\u003e\n\u003cli\u003eAluminum canister with stainless steel Hi-Flo end caps\u003c\/li\u003e\n\u003cli\u003eAnodized champagne finish, oval style\u003c\/li\u003e\n\u003cli\u003eRemovable spark arrestor included\u003c\/li\u003e\n\u003cli\u003eSlip-on design for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✓ What's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne FMF PowerCore 4 slip-on muffler with removable spark arrestor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"background-color:#fff3cd; border:1px solid #d4892a; color:#0E0D0B; padding:10px;\"\u003e\u003cstrong\u003ePAIR IT UP:\u003c\/strong\u003e For the full system and maximum gains, run this with the FMF PowerBomb head pipe.\u003c\/p\u003e\n\u003cp style=\"background-color:#fff3cd; border:1px solid #d4892a; color:#0E0D0B; padding:10px;\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information visit www.P65Warnings.ca.gov.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShips fast from DuneGoonShop!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Parts Unlimited","offers":[{"title":"Default Title","offer_id":49091345842401,"sku":"1831-0517","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1219\/2993\/files\/Screenshot2026-09-11074723.png?v=1789138103","url":"https:\/\/dunegoonshop.com\/products\/fmf-powercore-4-slip-on-muffler-yamaha-yfz450r","provider":"Dune Goons","version":"1.0","type":"link"}