{"product_id":"fmf-factory-4-1-rct-slip-on-muffler-2016-2026-ktm-husqvarna-gasgas","title":"FMF Factory 4.1 RCT Slip-On Muffler 045629 — GasGas \/ Husqvarna \/ KTM 350-450 2018-2023","description":"\u003cdiv\u003e\n\u003ch1\u003e\u003cstrong\u003eFMF Factory 4.1 RCT Slip-On Muffler 045629 — GasGas \/ Husqvarna \/ KTM 350-450 2018-2023\u003c\/strong\u003e\u003c\/h1\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eUnlock the true potential of your 350 or 450cc machine with the \u003cstrong\u003eFMF Factory 4.1 RCT Slip-On Muffler\u003c\/strong\u003e. Engineered to be the absolute pinnacle of FMF exhaust technology, the \u003cstrong\u003eResonance Chamber Technology (RCT)\u003c\/strong\u003e utilizes a unique, patented core shape that significantly lowers decibels while actually increasing power output throughout the entire RPM range. Whether you are attacking a supercross track or navigating technical enduro terrain, this muffler delivers the smooth, tractable power you need.\u003c\/p\u003e\n\u003cp\u003eCrafted from premium blue anodized titanium and finished with a sleek carbon fiber end cap, this muffler is designed to withstand the harshest off-road conditions while reducing overall bike weight. FMF's \u003cstrong\u003eFactory Forward Engineering\u003c\/strong\u003e pulls the muffler closer to the center of the bike, effectively centralizing mass for better handling and reduced vulnerability to crash damage. This is a top-tier performance upgrade for riders who refuse to compromise on quality or results.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: FMF Factory 4.1 RCT Slip-On Muffler\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eResonance Chamber Technology maintains maximum power while reducing overall sound output.\u003c\/li\u003e\n  \u003cli\u003eInternal ducting increases volume for improved exhaust flow and enhanced mid-to-top end power.\u003c\/li\u003e\n  \u003cli\u003eFactory Forward Engineering centralizes mass for better handling and crash resistance.\u003c\/li\u003e\n  \u003cli\u003eVersatile end cap design enables easy installation of spark arrestors or sound-tuning inserts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eFitment List\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\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  \u003ctr\u003e\n    \u003ctd\u003e2022-2023\u003c\/td\u003e\n    \u003ctd\u003eGas Gas\u003c\/td\u003e\n    \u003ctd\u003eMC 350F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2021-2023\u003c\/td\u003e\n    \u003ctd\u003eGas Gas\u003c\/td\u003e\n    \u003ctd\u003eEX 350F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2021-2023\u003c\/td\u003e\n    \u003ctd\u003eGas Gas\u003c\/td\u003e\n    \u003ctd\u003eMC 450F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2021-2023\u003c\/td\u003e\n    \u003ctd\u003eGas Gas\u003c\/td\u003e\n    \u003ctd\u003eEX 450F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2019-2022\u003c\/td\u003e\n    \u003ctd\u003eHusqvarna\u003c\/td\u003e\n    \u003ctd\u003eFC 350\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2019-2022\u003c\/td\u003e\n    \u003ctd\u003eHusqvarna\u003c\/td\u003e\n    \u003ctd\u003eFC 450\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2019-2022\u003c\/td\u003e\n    \u003ctd\u003eHusqvarna\u003c\/td\u003e\n    \u003ctd\u003eFX 450\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2019-2022\u003c\/td\u003e\n    \u003ctd\u003eHusqvarna\u003c\/td\u003e\n    \u003ctd\u003eFX 350\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2018-2022\u003c\/td\u003e\n    \u003ctd\u003eKTM\u003c\/td\u003e\n    \u003ctd\u003e350 SX-F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2018-2022\u003c\/td\u003e\n    \u003ctd\u003eKTM\u003c\/td\u003e\n    \u003ctd\u003e450 XC-F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2018-2022\u003c\/td\u003e\n    \u003ctd\u003eKTM\u003c\/td\u003e\n    \u003ctd\u003e350 XC-F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2018-2022\u003c\/td\u003e\n    \u003ctd\u003eKTM\u003c\/td\u003e\n    \u003ctd\u003e450 SX-F\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e2018-2020\u003c\/td\u003e\n    \u003ctd\u003eKTM\u003c\/td\u003e\n    \u003ctd\u003e450 SX-F Factory Edition\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this slip-on affect my bike's sound level?\u003c\/strong\u003e\u003cbr\u003e\nA: It is designed to meet AMA\/FIM sound requirements. It includes a QuietCore 94 dB insert for sensitive areas, ensuring you can ride at top performance without being excessively loud.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this difficult to install?\u003c\/strong\u003e\u003cbr\u003e\nA: Not at all. As a slip-on system, it is designed for a straightforward installation onto your stock header or an FMF header, utilizing the factory mounting points.\u003c\/p\u003e\n\n\u003ch2\u003eExpert Pro-Tip\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e Since you're running a high-output 350 or 450, keep an eye on your muffler's packing condition. These larger displacement engines push more exhaust volume and heat, which will break down packing material faster than smaller bikes. If the bike starts to sound raspy or loses that crisp throttle response, replace the packing immediately. A fresh repacking job is the cheapest way to maintain peak performance and keep the exhaust note at legal decibel levels.\u003c\/p\u003e\n\n\u003ch2\u003eRecommended Pairings\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Pairings:\u003c\/strong\u003e\u003cbr\u003e\no    \u003ca href=\"https:\/\/motohousemx.com\/collections\/moto-house-mx-performance-package-performance-upgrades-engine-mods-accessories-for-ktm-450-sx-f\"\u003eKTM 450 SX-F Performance Upgrades\u003c\/a\u003e\u003cbr\u003e\no    \u003ca href=\"https:\/\/motohousemx.com\/collections\/husqvarna-fc-350-performance-upgrades-engine-mods-and-accessories-moto-house-mx\"\u003eHusqvarna FC 350 Performance Parts\u003c\/a\u003e\u003cbr\u003e\no    \u003ca href=\"https:\/\/motohousemx.com\/collections\/gas-gas-mc-350f-performance-parts-and-accessories-moto-house-mx\"\u003eGas Gas MC 350F Performance Parts\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAbout Moto-House MX\u003c\/h2\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. Every order ships fast from our Central Florida location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMoto-House MX – Choice of Champions\u003c\/strong\u003e – Clermont \/ Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"FMF Factory 4.1 RCT Slip-On Muffler 045629\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"FMF\"\n  },\n  \"sku\": \"045629\",\n  \"description\": \"FMF Factory 4.1 RCT Slip-On Muffler for GasGas, Husqvarna, and KTM 350\/450cc (2018-2023). Features blue anodized titanium construction and advanced RCT performance.\"\n}\n\u003c\/script\u003e\n\u003c\/div\u003e","brand":"FMF","offers":[{"title":"Default Title","offer_id":40773755207763,"sku":"045629","price":769.49,"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-045629-husqvarna-fc-450-fc-350-fx-450-and-fx-350-775706.jpg?v=1735343381","url":"https:\/\/motohousemx.com\/products\/fmf-factory-4-1-rct-slip-on-muffler-2016-2026-ktm-husqvarna-gasgas","provider":"Moto-House MX","version":"1.0","type":"link"}