{"product_id":"fmf-045628-slip-on-muffler-ktm-husqvarna-gasgas-2023-2025","title":"FMF Factory 4.1 RCT Slip-On Muffler 045628 — KTM \/ Husqvarna \/ GasGas 350-450cc 2018-2023","description":"\u003ch1\u003e\u003cstrong\u003eFMF Factory 4.1 RCT Slip-On Muffler 045628 — KTM \/ Husqvarna \/ GasGas 350-450cc 2018-2023\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2\u003eProduct DescriptiFMF Factory 4.1 RCT Slip-On Muffler 045628 — KTM \/ Husqvarna \/ GasGas 350-450cc 2018-2023on\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFMF Factory 4.1 RCT Slip-On Muffler\u003c\/strong\u003e is the definitive performance upgrade for your 350cc or 450cc machine. Utilizing FMF’s patented \u003cstrong\u003eResonance Chamber Technology\u003c\/strong\u003e (RCT), this muffler features a proprietary core shape that minimizes sound output while unlocking \u003cstrong\u003emaximum power\u003c\/strong\u003e across the entire RPM range. It is engineered to give you the competitive edge on the track or the trail.\u003c\/p\u003e\n\u003cp\u003eBuilt with FMF’s signature Factory Forward engineering, this system is designed to centralize mass, significantly improving your bike's handling characteristics and making the unit less susceptible to crash damage. Constructed from lightweight aluminum and finished with a premium carbon fiber end cap, it offers durability without unnecessary weight, ensuring your bike remains agile and responsive under the most demanding conditions.\u003c\/p\u003e\n\u003ch3\u003eTop Features: FMF Factory 4.1 RCT Slip-On\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePatented Resonance Chamber Technology (RCT) for optimized sound and power delivery\u003c\/li\u003e\n\u003cli\u003eAdvanced internal chamber ducts increase volume for superior exhaust flow\u003c\/li\u003e\n\u003cli\u003eFactory Forward Engineering improves mass centralization for enhanced handling\u003c\/li\u003e\n\u003cli\u003eCarbon fiber end cap design allows for tool-free installation of spark arrestors or tuning tips\u003c\/li\u003e\n\u003cli\u003eIncludes QuietCore 94 dB insert and spark arrestor for total sound compliance\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\u003ch2\u003eFitment List\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; margin-top: 15px; margin-bottom: 15px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2018-2022\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eKTM\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e350 SX-F, 350 XC-F, 450 XC-F, 450 SX-F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2018-2020\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eKTM\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e450 SX-F Factory Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2019-2022\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eHusqvarna\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eFC350, FC450, FX450, FX350\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2022-2023\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eGas Gas\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eMC 350F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2021-2023\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eGas Gas\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eEX 350F, MC 450F, EX 450F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this muffler work with the stock header pipe?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it is designed to be a direct slip-on replacement that works perfectly with either your factory OEM header or an aftermarket FMF header.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the spark arrestor easy to remove for closed-course riding?\u003c\/strong\u003e\u003cbr\u003eA: It is. The innovative end cap design allows for the removal of the spark arrestor or the installation of different tuning tips by simply unscrewing four bolts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e High-performance exhausts can lean out your fuel mixture. After installing this muffler, I highly recommend checking your spark plug color or having your ECU re-mapped. Ensuring your fuel map matches the increased exhaust flow will prevent your engine from running hot and will give you the crisp, immediate throttle response you are looking for.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Pairings:\u003c\/strong\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/ktm-4-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eKTM 4-Stroke Performance Upgrades\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/husqvarna-fc-450-performance-upgrades-engine-mods-and-accessories-moto-house-mx\"\u003eHusqvarna 4-Stroke Performance Parts\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/gas-gas-4-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eGas Gas 4-Stroke Performance Parts\u003c\/a\u003e\u003c\/p\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\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\u003cp\u003e \u003c\/p\u003e","brand":"FMF","offers":[{"title":"Default Title","offer_id":39775325323347,"sku":"045628","price":607.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/fmf-aluminum-factory-41-rct-slip-on-carbon-fiber-end-cap-2019-2022-husqvarna-fc-350-045628-225368.jpg?v=1735341948","url":"https:\/\/motohousemx.com\/products\/fmf-045628-slip-on-muffler-ktm-husqvarna-gasgas-2023-2025","provider":"Moto-House MX","version":"1.0","type":"link"}