{"product_id":"fmf-044445-factory-41-rct-slip-on-muffler-yamaha-yz450f-yz450fx-moto-house-mx","title":"FMF Factory 4.1 RCT Slip-On Muffler (Blue Anodized Titanium\/Carbon Fiber) 044445 - Yamaha YZ450F \/ YZ450FX 2018-2026","description":"\u003ch2\u003e\u003cstrong\u003eFMF Factory 4.1 RCT Slip-On Muffler (Blue Anodized Titanium\/Carbon Fiber) 044445 - Yamaha YZ450F \/ YZ450FX 2018-2026\u003c\/strong\u003e\u003c\/h2\u003e\n\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;\"\u003eCompatible with stock header or FMF header.\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFMF Factory 4.1 RCT\u003c\/strong\u003e slip-on muffler delivers top-tier performance and championship engineering to your Yamaha YZ450F or YZ450FX. Designed with Resonance Chamber Technology, this system utilizes a patented core shape that reduces decibel levels while maintaining peak engine power output.\u003c\/p\u003e\n\u003cp\u003eCrafted from a blue anodized titanium canister paired with a carbon fiber end cap, this muffler incorporates Factory Forward Engineering to centralize mass and improve crash resistance. Internal chamber ducts optimize exhaust gas volume to yield continuous power gains across the entire powerband.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: FMF Factory 4.1 RCT\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRCT (Resonance Chamber Technology) patented core shape lowers decibels while maintaining peak power.\u003c\/li\u003e\n\u003cli\u003eInternal chamber ducts increase volume to optimize exhaust flow and boost power throughout the RPM range.\u003c\/li\u003e\n\u003cli\u003eFactory Forward Engineering centralizes mass and provides greater crash resilience.\u003c\/li\u003e\n\u003cli\u003eInnovative rear end cap allows quick installation of tuning inserts or the included spark arrestor.\u003c\/li\u003e\n\u003cli\u003eIncludes a pre-installed QuietCore 94 dB insert and spark arrestor for ultimate versatility.\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\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\u003e2018-2026\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYZ450F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2025\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\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: Is a spark arrestor included with this muffler?\u003c\/b\u003e\u003cbr\u003eA: Yes, a spark arrestor is included in the muffler along with a QuietCore 94 dB insert.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Does this slip-on require an aftermarket header, or will it work with stock?\u003c\/b\u003e\u003cbr\u003eA: This muffler is fully compatible with either your stock header or an aftermarket FMF header.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e When servicing your slip-on muffler, inspect the packing material regularly and repack it according to manufacturer intervals to maintain optimal decibel levels and preserve peak exhaust scavenging efficiency.\u003c\/p\u003e\n\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\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\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\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":40773947228243,"sku":"044445","price":764.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/fmf-ti-factory-41-rct-slip-on-carbon-fiber-end-cap-044445-2018-2024-yamaha-yz450f-yz450fx-870229.jpg?v=1741211617","url":"https:\/\/motohousemx.com\/products\/fmf-044445-factory-41-rct-slip-on-muffler-yamaha-yz450f-yz450fx-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}