{"product_id":"fmf-044477-factory-41-rct-exhaust-system-yamaha-yz450f-moto-house-mx","title":"FMF Factory 4.1 RCT Exhaust System (Aluminum\/Stainless Steel\/Carbon Fiber) 044477 - Yamaha WR450F \/ YZ450F \/ YZ450FX 2023-2026","description":"\u003ch1\u003e\u003cstrong\u003eFMF Factory 4.1 RCT Exhaust System (Aluminum\/Stainless Steel\/Carbon Fiber) 044477 - Yamaha WR450F \/ YZ450F \/ YZ450FX 2023-2026\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cdiv style=\"background-color:#fdecea; border:1px solid #f5c2c0; border-left:5px solid #d93025; border-radius:6px; padding:10px 14px; margin:12px 0; box-sizing:border-box; width:100%; max-width:100%; word-wrap:break-word; overflow-wrap:break-word; font-size:15px; line-height:1.5;\"\u003e\n\u003cstrong style=\"color:#b3261e;\"\u003ePlease Note:\u003c\/strong\u003e \u003cspan style=\"color:#5f1a15;\"\u003eFor closed course competition only.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eMaximize your machine's potential with the \u003cstrong\u003eFMF Factory 4.1 RCT Exhaust System\u003c\/strong\u003e, engineered for serious off-road riders demanding elite performance. This complete system incorporates advanced FMF Resonance Chamber Technology both internally and externally to maximize power output while reducing sound levels.\u003c\/p\u003e\n\u003cp\u003eDesigned with a shorter overall length that is less susceptible to crash damage, this system complements Factory Forward Engineering by moving the muffler closer to the motor to centralize mass. Built entirely from aerospace-grade materials, it features an anodized aluminum muffler body, a durable stainless steel header, and a lightweight carbon fiber end cap.\u003c\/p\u003e\n\u003ch3\u003eTop Features: FMF Factory 4.1 RCT\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIncorporates FMF Resonance Chamber Technology™ both internally and externally\u003c\/li\u003e\n\u003cli\u003eShorter overall length that is less susceptible to crash damage and complementary to Factory Forward Engineering, moving the muffler closer to the motor to centralize mass\u003c\/li\u003e\n\u003cli\u003eConstructed from only aerospace grade materials that meet exacting specifications and is manufactured 100% at the southern California factory\u003c\/li\u003e\n\u003cli\u003eSpark arrestor screen insert included\u003c\/li\u003e\n\u003cli\u003e94dB insert included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.\u003c\/p\u003e\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eVehicle Brand\u003c\/th\u003e\n\u003cth\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2023-2025\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYZ450F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eWR450F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYZ450FX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: Does this exhaust system include a spark arrestor?\u003c\/b\u003e\u003cbr\u003eA: Yes, a spark arrestor screen insert is included in the package.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What sound reduction inserts come with the system?\u003c\/b\u003e\u003cbr\u003eA: It includes a 94dB sound insert right out of the box.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What materials are used in this exhaust build?\u003c\/b\u003e\u003cbr\u003eA: It features an aluminum muffler, stainless steel header, and carbon fiber end cap.\u003c\/p\u003e\n\u003ch3\u003eExpert Pro-Tip\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e When servicing your exhaust system, inspect the packing material inside the aluminum canister every 20-30 hours of riding. Fresh packing ensures optimal performance, maintains proper sound levels, and protects your carbon fiber end cap from excessive heat degradation.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-yz450f-performance-upgrades-engine-mods-and-accessories-moto-house-mx\"\u003eYamaha YZ450F Performance Upgrades \u0026amp; Accessories\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-4-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eYamaha 4-Stroke Performance Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/mx-off-road-motorcycle-tools\"\u003eMotorcycle Tools \u0026amp; Accessories\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAbout Moto-House MX\u003c\/h3\u003e\n\u003cp\u003eAt Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.\u003c\/p\u003e\n\u003cp\u003e\u003ci\u003e\u003cstrong\u003eMoto-House MX - Choice of Champions\u003c\/strong\u003e - Your premier powersports source with great customer service and lightning-fast shipping straight to your door.\u003c\/i\u003e\u003c\/p\u003e","brand":"FMF","offers":[{"title":"Default Title","offer_id":41393585455187,"sku":"044477","price":1021.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/fmf-stainless-steel-alum-fact-41-rct-wr-carbon-cap-full-system-044477-2023-2024-yamaha-yz450f-180703.jpg?v=1735343298","url":"https:\/\/motohousemx.com\/products\/fmf-044477-factory-41-rct-exhaust-system-yamaha-yz450f-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}