{"product_id":"fmf-023043-factory-fatty-pipe-suzuki-rm85-moto-house-mx","title":"FMF Factory Fatty Pipe 023043 — Suzuki RM85 2002-2023","description":"\u003ch1\u003e\u003cstrong\u003eFMF Factory Fatty Pipe 024039 — Yamaha YZ85 2002-2018\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eBring authentic \"works\" team style and performance to your mini machine with the \u003cstrong\u003eFMF Factory Fatty Pipe 024039\u003c\/strong\u003e. Reminiscent of the hand-crafted cone pipes once reserved exclusively for factory racing teams, this expansion chamber shares the same uncompromising material quality and elite craftsmanship. The Factory Fatty is engineered specifically to broaden and smooth out your two-stroke power curve, delivering noticeable performance boosts across the entire RPM spectrum—yielding more low-end grunt, sharper mid-range pulling power, and enhanced high-RPM over-rev.\u003c\/p\u003e\n\u003cp\u003eConstructed with extreme attention to internal dynamics, FMF utilizes a lighter 20-gauge steel for the main body of the pipe to maximize resonance and crisp throttle response, while implementing heavy-duty 19-gauge steel at the header section to endure hard impacts and flying roost. Every single seam is meticulously hand-pounded to create ultra-smooth internal flow transitions. No matter your discipline—whether it is competitive motocross or demanding off-road trails—the raw finish Factory Fatty provides the competitive edge your young racer needs to pull holeshots.\u003c\/p\u003e\n\u003ch3\u003eTop Features: FMF Factory Fatty Pipe\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Works Look:\u003c\/strong\u003e Features a bare, unplated finish with beautiful hand-pounded weld lines that replicate factory team performance styling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Power Boosting:\u003c\/strong\u003e Exponentially broadens your power band, improving low-end response, mid-range punch, and top-end over-rev.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Gauge Steel Optimization:\u003c\/strong\u003e Employs thin 20-gauge steel for weight savings and acoustics, with rugged 19-gauge steel protection at the head pipe entry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand-Finished Seams:\u003c\/strong\u003e Ensures smooth interior wall transitions to eliminate exhaust gas turbulence and maximize raw flow velocity.\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;\"\u003e2002-2018\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;\"\u003eYZ85\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 the Factory Fatty pipe require any special maintenance compared to a standard nickel-plated pipe?\u003c\/strong\u003e\u003cbr\u003eA: Yes, because the Factory Fatty features a raw, unplated metal finish to maximize performance resonance, it is susceptible to surface rust if left unprotected. We recommend washing off mud immediately after riding, drying the pipe completely, and applying a light coating of WD-40 or anti-corrosion spray while the pipe is still warm to preserve its classic factory appearance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will I need to re-jet my carburetor after bolting on this FMF expansion chamber?\u003c\/strong\u003e\u003cbr\u003eA: Yes, since the Factory Fatty significantly increases exhaust flow and engine efficiency, adjustments to your carburetor jetting are usually required to maintain a safe, reliable fuel mixture. Check your spark plug condition or consult FMF's jetting guidelines for your specific elevation and ambient temperature settings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e To guarantee an absolute airtight connection at the cylinder exhaust port, never reuse old, flattened copper exhaust crush gaskets or dried-out manifold O-rings when installing a new performance pipe. Minor exhaust air leaks draw ambient oxygen backward into the combustion chamber, which can lean out your air-fuel mixture, create harsh exhaust backfiring, and dramatically reduce the low-end throttle response you just paid for. Always install new high-temp O-rings and use a light coating of premium copper RTV silicone on the manifold coupler flange during installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Pairings:\u003c\/strong\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-yz85-performance-parts-and-accessories-moto-house-mx\"\u003eYamaha YZ85 Performance Parts \u0026amp; Upgrades\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-2-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eYamaha 2-Stroke Performance Parts\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/premium-motorcycle-chemicals-brake-fluid-bike-wash-coolant-chain-lubes\"\u003eMotorcycle Chemicals\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":41650702222,"sku":"023043","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/fmf-factory-fatty-pipe-exhaust-suzuki-rm85-2002-2023-023043-659243.jpg?v=1735342172","url":"https:\/\/motohousemx.com\/products\/fmf-023043-factory-fatty-pipe-suzuki-rm85-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}