{"product_id":"fmf-042259-factory-4-1-rct-slip-on-muffler-kawasaki-kx250f-moto-house-mx","title":"FMF Factory 4.1 RCT Slip-On Muffler 042259 - Kawasaki KX250F 2009-2016","description":"\u003ch2\u003e\u003cstrong\u003eFMF Factory 4.1 RCT Slip-On Muffler 042259 - Kawasaki KX250F 2009-2016\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe FMF \u003cstrong\u003eFactory 4.1 RCT Slip-On Muffler\u003c\/strong\u003e incorporates advanced Resonance Chamber Technology, utilizing a patented core shape that lowers decibels while preserving maximum power output. Internal ducts within the chambers boost internal volume for enhanced exhaust flow, delivering performance gains across the entire power range.\u003c\/p\u003e\n\u003cp\u003eDesigned with FMF's Factory Forward Engineering to centralize mass and resist crash damage, this muffler features a blue anodized titanium canister, carbon fiber end cap, and stainless steel compatibility. It includes a QuietCore 94 dB insert and a spark arrestor, meeting strict AMA and FIM sound regulations.\u003c\/p\u003e\n\u003ch3\u003eTop Features: FMF Factory 4.1 RCT\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output.\u003c\/li\u003e\n\u003cli\u003eInternal chamber ducts increase internal volume for improved exhaust flow and power gains throughout the entire range.\u003c\/li\u003e\n\u003cli\u003eFactory Forward Engineering design centralizes mass and makes the muffler less prone to crash damage[cite: 1].\u003c\/li\u003e\n\u003cli\u003eInnovative rear end cap allows simple installation of tuning tip inserts or spark arrestors with the removal of just four screws[cite: 1].\u003c\/li\u003e\n\u003cli\u003eMeets AMA and FIM sound requirements, and includes both a QuietCore 94 dB insert and a spark arrestor[cite: 1].\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\u003e2009-2016\u003c\/td\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKX250F\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 muffler come with a spark arrestor and quiet insert?\u003c\/b\u003e\u003cbr\u003eA: Yes, it includes a QuietCore 94 dB insert and a spark arrestor pre-installed or packaged with the muffler[cite: 1].\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Can this slip-on be used with the stock header?\u003c\/b\u003e\u003cbr\u003eA: Yes, it is fully compatible with either the stock header or an aftermarket FMF header[cite: 1].\u003c\/p\u003e\n\u003ch3\u003eExpert Pro-Tip\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e When servicing your RCT muffler, make sure to use a high-temperature silicone seal lightly around the inlet slip joint during reinstallation to prevent carbon leaks. Regularly check the four rear end-cap screws to ensure they remain secure under high-frequency 4-stroke vibrations.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/kawasaki-4-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eKawasaki 4-Stroke Performance Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/kawasaki-kx250f-performance-upgrades-engine-mods-and-accessories-moto-house-mx\"\u003eKawasaki KX250F Performance Parts \u0026amp; Accessories\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\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 042259 - Kawasaki KX250F 2009-2016\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"FMF\"\n  },\n  \"sku\": \"042259\",\n  \"mpn\": \"042259\",\n  \"description\": \"FMF 042259 Factory 4.1 RCT Slip-On Muffler for Kawasaki KX250F 2009-2016. Blue titanium with carbon end cap. Fast shipping from Moto-House MX.\"\n}\n\u003c\/script\u003e","brand":"FMF","offers":[{"title":"Default Title","offer_id":42546231902291,"sku":"042259","price":712.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/fmf-factory-41-rct-muffler-anodized-titanium-042259-2009-2016-kawasaki-kx250f-270712.jpg?v=1741212804","url":"https:\/\/motohousemx.com\/products\/fmf-042259-factory-4-1-rct-slip-on-muffler-kawasaki-kx250f-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}