{"product_id":"fmf-044456-factory-4-1-rct-exhaust-system-yamaha-yz250f-wr250f-moto-house-mx","title":"FMF Factory 4.1 RCT Full Exhaust System (Stainless\/Aluminum\/Carbon) 044456 - Yamaha YZ250F \/ YZ250FX \/ WR250F 2019-2026","description":"\u003ch2\u003e\u003cstrong\u003eFMF Factory 4.1 RCT Full Exhaust System (Stainless Steel \/ Aluminum \/ Carbon Fiber) 044456 — 2019-2026 Yamaha YZ250F, YZ250FX, and WR250F\u003c\/strong\u003e\u003c\/h2\u003e\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;\"\u003eIncludes a 94dB insert[cite: 1] and integrated spark arrestor screen insert.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFMF Factory 4.1 RCT Full Exhaust System\u003c\/strong\u003e integrates FMF's patented Resonance Chamber Technology™ both internally and externally[cite: 1] to deliver massive power gains across the entire RPM range[cite: 1] while maximizing weight savings[cite: 1].\u003c\/p\u003e\n\u003cp\u003eEngineered with a shorter overall length that resists crash damage[cite: 1], this system pairs FMF's Factory Forward Engineering[cite: 1] to centralize mass by moving the muffler closer to the motor[cite: 1]. Handcrafted entirely at FMF's Southern California facility[cite: 1] using aerospace-grade materials[cite: 1], this complete system pairs a stainless steel MegaBomb header[cite: 1] with an aluminum muffler and a carbon fiber end cap.\u003c\/p\u003e\n\u003ch3\u003eTop Features: FMF Factory 4.1 RCT Full System\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIncorporates internal and external Resonance Chamber Technology™ (RCT)[cite: 1].\u003c\/li\u003e\n\u003cli\u003eShorter profile centralizes mass and reduces vulnerability to crash damage[cite: 1].\u003c\/li\u003e\n\u003cli\u003eConstructed from premium aerospace-grade materials 100% in Southern California[cite: 1].\u003c\/li\u003e\n\u003cli\u003eIncludes a stainless steel MegaBomb header and a spark arrestor screen insert[cite: 1].\u003c\/li\u003e\n\u003cli\u003eDelivers massive power gains across the entire powerband alongside major weight savings[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\u003e2019-2026\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYZ250F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020-2026\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYZ250FX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2023-2026\u003c\/td\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eWR250F\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 full exhaust system include the MegaBomb header?\u003c\/b\u003e\u003cbr\u003eA: Yes, this complete system includes the stainless steel MegaBomb header[cite: 1].\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Is a spark arrestor and quiet insert included?\u003c\/b\u003e\u003cbr\u003eA: Yes, it includes both a 94dB sound insert[cite: 1] and a spark arrestor screen insert[cite: 1].\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eExpert Pro-Tip:\u003c\/b\u003e When installing a new full exhaust system, leave all head pipe flange nuts and mid-pipe clamp bolts loose until the entire system is properly aligned on the chassis to eliminate pre-load and prevent exhaust leaks.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-yz250f-performance-parts-accessories-moto-house-mx\"\u003eYamaha YZ250F Performance Parts\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\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":41393719378003,"sku":"044456","price":967.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/fmf-41-rct-exhaust-system-with-megabomb-aluminum-044456-2019-2024-yamaha-yz250f-yz250fx-460075.jpg?v=1735341948","url":"https:\/\/motohousemx.com\/products\/fmf-044456-factory-4-1-rct-exhaust-system-yamaha-yz250f-wr250f-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}