{"product_id":"fmf-044224-powercore-4-aluminum-slip-on-muffler-with-spark-arrestor-yamaha-yfz450-utv","title":"FMF 044224 Powercore 4 Aluminum Slip-On Muffler With Spark Arrestor — Yamaha YFZ450 UTV","description":"\u003cp\u003e\u003cb\u003eFMF RACING — Premium Anodized Champagne Aluminum Oval Muffler, Stainless Steel Hi-Flo Endcap, and Removable Spark Arrestor for Yamaha YFZ450 Sport ATVs\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eUnleash instant throttle response, increased power, and an aggressive exhaust note on your machine with the FMF 044224 Powercore 4 Slip-On Muffler. The restrictive stock muffler limits exhaust flow and traps excessive heat, choking your engine's true capabilities. Engineered specifically for the iconic Yamaha YFZ450, the Powercore 4 is designed to optimize exhaust scavenging, yielding a noticeable boost in horsepower and torque throughout the entire power curve. Whether you are blasting through dunes, tracking on a motocross course, or tackling tight woods, this slip-on silencer delivers a highly usable power increase compatible with any UTV riding style.\u003c\/p\u003e\n\u003cp\u003eBuilt to bridge the gap between premium performance and rugged durability, the Powercore 4 features a lightweight aluminum canister finished in a sleek anodized champagne coating. This aluminum body is paired with a heavy-duty stainless steel mid-pipe and a Hi-Flo conical endcap, providing the ultimate structural balance of strength and weight reduction. Precision mechanical engineering ensure it effortlessly handles the heavy chassis vibrations and punishing sand blasting common to sport quad riding. Adding excellent trail versatility, FMF includes a removable spark arrestor screen within the canister, allowing you to quickly switch between unrestricted closed-course race tracks and noise\/fire-regulated public off-road riding areas.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBroad Power Gains:\u003c\/b\u003e Formulated to increase horsepower and torque cleanly across the low, mid, and top-end power bands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSleek Champagne Canister:\u003c\/b\u003e Lightweight oval aluminum body features an anodized champagne finish for superior corrosion defense.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStainless Hi-Flo Endcap:\u003c\/b\u003e Conical stainless steel endcap optimizes internal flow dynamics and increases structural durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRemovable Spark Arrestor:\u003c\/b\u003e Includes a built-in screen spark arrestor to maintain legal compliance in forestry and public trail spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSubstantial Weight Savings:\u003c\/b\u003e Noticeably lighter than the bulky OEM factory steel silencer assembly, improving chassis agility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDirect Bolt-On Fitment:\u003c\/b\u003e Specifically engineered to slip directly onto the stock headpipe of 2004-2009 and 2012-2015 Yamaha YFZ450 models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eMoto-House MX Pro Tip:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe carbureted Yamaha YFZ450 responds incredibly well to exhaust upgrades, but freeing up the exhaust flow means your motor will naturally pull more air. To prevent your quad from running too lean and to maximize your horsepower gains, we strongly recommend checking your carburetor jetting. Pairing this FMF slip-on with a slightly richer main jet and a high-flow intake filter will completely transform your quad's mid-range pull. \u003cb\u003eInstallation Tip:\u003c\/b\u003e When mounting this slip-on, clean the headpipe junction thoroughly. Apply a thin bead of high-temperature copper silicone gasket sealant to the slip-fit joint before clamping it down to guarantee a 100% leak-free exhaust seal. \u003cb\u003eMaintenance Advice:\u003c\/b\u003e High-performance four-stroke mufflers rely on internal fiberglass packing to maintain power and acoustic depth. To prevent the aluminum shell from overheating and discoloring, replace your silencer packing every 30 hours of hard riding.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"border: 1px solid #dddddd; padding: 8px;\"\u003eMuffler Architecture\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #dddddd; padding: 8px;\"\u003eMaterial Profile\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #dddddd; padding: 8px;\"\u003ePrimary Compatibility\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003ePerformance Slip-On Muffler\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003eAnodized Champagne Aluminum Body\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003eYamaha YFZ450 (Sport ATV \/ UTV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003eHi-Flo Conical Configuration\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003eStainless Steel Mid-Pipe \u0026amp; Endcap\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003eModel Years: 2004-2009, 2012-2015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003eWeight: 6.6 lbs\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003eRemovable Screen Spark Arrestor\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dddddd; padding: 8px; text-align: center;\"\u003eStock Headpipe Match\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFAQ Questions\u003c\/h3\u003e\n\u003cp\u003eQ) \u003cb\u003eWill this FMF slip-on muffler bolt directly up to the newer fuel-injected YFZ450R models?\u003c\/b\u003e\u003cbr\u003eA) No, this slip-on is engineered and dimensioned strictly for the standard carbureted YFZ450 models (2004-2009, 2012-2015). The fuel-injected YFZ450R utilizes a completely different subframe layout, mounting points, and exhaust pipe routing.\u003c\/p\u003e\n\u003cp\u003eQ) \u003cb\u003eDoes this exhaust system include the front header pipe or reuse the factory hardware?\u003c\/b\u003e\u003cbr\u003eA) This is a slip-on system, meaning it includes the mid-pipe and muffler canister designed to bolt directly onto your stock original header pipe. It does not include a replacement front header pipe.\u003c\/p\u003e\n\u003cdiv class=\"silo-links\"\u003e\n\u003ca href=\"\/search?q=Yamaha+YFZ450+Performance+Intake+and+Engine+Parts\"\u003eYamaha YFZ450 Engine Parts\u003c\/a\u003e | \u003ca href=\"\/search?q=FMF+RACING+Four+Stroke+Slip+On+Mufflers\"\u003eShop All FMF Mufflers\u003c\/a\u003e | \u003ca href=\"\/search?q=Sport+ATV+High+Performance+Slip+On+Exhausts\"\u003eSport ATV Slip-On Exhausts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cb\u003eMoto-House MX – Choice of Champions\u003c\/b\u003e – is located in Clermont\/Montverde, FL. We are the best shop in Central Florida with lightning-fast shipping.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"FMF","offers":[{"title":"Default Title","offer_id":44636781314131,"sku":"044224","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/234463.png?v=1779147834","url":"https:\/\/motohousemx.com\/products\/fmf-044224-powercore-4-aluminum-slip-on-muffler-with-spark-arrestor-yamaha-yfz450-utv","provider":"Moto-House MX","version":"1.0","type":"link"}