{"product_id":"fmf-042403-factory-4-1-rct-slip-on-muffler-kawasaki-kx450-kx450x-moto-house-mx","title":"FMF Factory 4.1 RCT Slip-On Muffler (Stainless\/Carbon) 042403 - Kawasaki KX450 \/ KX450X 2024-2026","description":"\u003ch1\u003e\u003cstrong\u003eFMF Factory 4.1 RCT Slip-On Muffler (Stainless Steel \/ Carbon Fiber End Cap) 042403 - Kawasaki KX450 \/ KX450X 2024-2026\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFMF Factory 4.1 RCT Slip-On Muffler\u003c\/strong\u003e incorporates patented Resonance Chamber Technology to lower decibel levels while retaining maximum power output[cite: 1]. Internal ducts within the RCT system increase internal volume for improved exhaust flow, generating comprehensive power gains throughout the entire RPM range[cite: 1].\u003c\/p\u003e\n\u003cp\u003eEngineered with FMF's Factory Forward Engineering to centralize mass and resist crash damage[cite: 1], this system features a durable stainless steel body paired with a lightweight carbon fiber end cap[cite: 1]. It includes a QuietCore 94 dB insert and a spark arrestor[cite: 1], ensuring it meets AMA and FIM sound requirements[cite: 1] straight out of the box.\u003c\/p\u003e\n\u003ch3\u003eTop Features: FMF Factory 4.1 RCT\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRCT patented core shape lowers decibels while preserving maximum power output[cite: 1].\u003c\/li\u003e\n\u003cli\u003eInternal duct chambers boost volume to optimize exhaust flow and broaden power gains[cite: 1].\u003c\/li\u003e\n\u003cli\u003eFactory Forward Engineering centralizes mass and reduces crash vulnerability[cite: 1].\u003c\/li\u003e\n\u003cli\u003eIncludes a QuietCore 94 dB insert and spark arrestor for versatility[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\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKX450\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eKawasaki\u003c\/td\u003e\n\u003ctd\u003eKX450X\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: Is this slip-on muffler compatible 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\u003cp\u003e\u003cb\u003eQ: Does the muffler come with a spark arrestor and quiet insert included?\u003c\/b\u003e\u003cbr\u003eA: Yes, both a spark arrestor and a QuietCore 94 dB insert are included[cite: 1].\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e When mounting your slip-on muffler, apply high-temp silicone sealant lightly at the mid-pipe slip joint to eliminate exhaust leaks, and ensure all mounting bolts are initially hand-tightened to allow proper alignment before final torqueing.\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\/mx-off-road-chains\"\u003eMX Chains\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":41549751681107,"sku":"042403","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-042403-2024-kawasaki-kx450-879001.jpg?v=1735341940","url":"https:\/\/motohousemx.com\/products\/fmf-042403-factory-4-1-rct-slip-on-muffler-kawasaki-kx450-kx450x-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}