{"product_id":"fmf-024052-exhaust-factory-fatty-pipe-yamaha-yz125-yz125x-moto-house-mx","title":"FMF Factory Fatty Pipe 024052 — Yamaha YZ125 \/ YZ125X 2005-2021","description":"\u003ch1\u003e\u003cstrong\u003eFMF Factory Fatty Pipe 024052 — Yamaha YZ125 YZ125X 2005-2021\u003c\/strong\u003e\u003c\/h1\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eFMF Factory Fatty Pipe\u003c\/strong\u003e is inspired by the iconic \"works\" cone pipes once reserved exclusively for factory race teams. This pipe brings professional-grade craftsmanship and material quality to your personal machine, significantly broadening and smoothing out your power curve. By boosting gains throughout the entire power band—providing more low-end, improved mid-range, and increased over-rev—the Fatty is the ultimate performance choice for any riding style.\u003c\/p\u003e\n\n\u003cp\u003eConstructed for performance and longevity, this pipe utilizes 20-gauge steel for the main body to keep weight down, while the header portion is built from 19-gauge steel to withstand intense heat and vibration. The hand-pounded seams ensure smooth, unrestricted flow transitions, eliminating exhaust turbulence to help your engine perform at its absolute peak.\u003c\/p\u003e\n\n\u003ch3\u003eTop Features: FMF Factory Fatty Pipe\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRace-inspired design reminiscent of factory \"works\" cone pipes\u003c\/li\u003e\n  \u003cli\u003eBroader, smoother powerband with gains in low, mid, and top-end\u003c\/li\u003e\n  \u003cli\u003eLightweight 20-gauge steel body with durable 19-gauge steel header\u003c\/li\u003e\n  \u003cli\u003eHand-pounded seams for optimized exhaust gas flow\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 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;\"\u003e2005-2021\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYamaha\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYZ125\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;\"\u003e2020-2021\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYamaha\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYZ125X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this pipe increase top-end speed?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, the Factory Fatty is specifically designed to boost gains across the entire powerband, including a noticeable increase in over-rev compared to stock pipes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this pipe difficult to install?\u003c\/strong\u003e\u003cbr\u003e\nA: It is a direct bolt-on replacement for your stock pipe. However, we always recommend replacing your exhaust O-rings and checking your jetting to match the new performance characteristics of your bike.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e When fitting a performance pipe, don't ignore your jetting. A new pipe changes your engine's scavenging efficiency; if you don't adjust your main jet and needle clip position, you risk running lean, which can cause premature piston wear or even engine failure on a 125cc two-stroke.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRecommended Pairings:\u003c\/strong\u003e\u003cbr\u003e\no    \u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-2-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eYamaha 2-Stroke Performance Parts \u0026amp; Upgrades\u003c\/a\u003e\u003cbr\u003e\no    \u003ca href=\"https:\/\/motohousemx.com\/collections\/unlock-peak-performance-for-your-yamaha-yz125-high-quality-parts-accessories\"\u003eYamaha YZ125 Performance Parts \u0026amp; Upgrades\u003c\/a\u003e\u003cbr\u003e\no    \u003ca href=\"https:\/\/motohousemx.com\/collections\/premium-motorcycle-chemicals-brake-fluid-bike-wash-coolant-chain-lubes\"\u003ePremium Motorcycle Chemicals \u0026amp; Maintenance\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 Fatty Pipe 024052\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"FMF\"\n  },\n  \"sku\": \"024052\",\n  \"description\": \"The FMF Factory Fatty Pipe for Yamaha YZ125\/YZ125X offers factory-level performance, broadening the powerband with durable steel construction and precision hand-pounded seams.\"\n}\n\u003c\/script\u003e","brand":"FMF","offers":[{"title":"Default Title","offer_id":40786293588051,"sku":"024052","price":287.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/fmf-factory-fatty-exhaust-2-stroke-pipe-024052-2005-2021-yamaha-yz125-yz125x-477437.jpg?v=1735341992","url":"https:\/\/motohousemx.com\/products\/fmf-024052-exhaust-factory-fatty-pipe-yamaha-yz125-yz125x-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}