{"product_id":"s-s-cycle-conversion-kits-1986-2021-harley-davidson-sportster-models-2","title":"S\u0026S Cycle Conversion Kits — 1986-2021 Harley-Davidson Sportster Models","description":"\u003cp\u003eS\u0026amp;S Cycle 1250cc conversion kit for 1986-2021 Harley Sportster models, converting stock 883cc or 1200cc displacement without requiring machine work or piston rebalancing. Kit includes forged pistons, cylinders, gaskets, and assembly lube with detailed installation instructions.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eForged flat-top pistons with coated skirts\u003c\/li\u003e\n  \u003cli\u003eS\u0026amp;S 3-9\/16\" bore cylinders\u003c\/li\u003e\n  \u003cli\u003eComplete gasket set included (head, base, exhaust)\u003c\/li\u003e\n  \u003cli\u003eNo machining or rebalancing required\u003c\/li\u003e\n  \u003cli\u003eAssembly lube and instructions included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e S\u0026amp;S Cycle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 910-0689\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplacement Increase:\u003c\/strong\u003e 883cc or 1200cc to 1250cc\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePiston Bore:\u003c\/strong\u003e 3-9\/16 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 22.1 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Engine Components \/ Piston Sets - Powersports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits all Harley-Davidson Sportster models 1986 through 2021. Note: 883cc cylinder heads are not compatible with this kit and cannot be reused.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan I use my stock 883 cylinder head with this kit?\u003c\/h3\u003e\n\u003cp\u003eNo — 883 cylinder heads are not compatible with this conversion kit. You will need a 1200cc head or upgrade to a performance head.\u003c\/p\u003e\n\u003ch3\u003eDo I need to have the pistons balanced or cylinders machined?\u003c\/h3\u003e\n\u003cp\u003eNo — the kit is designed to install without balancing work or machine shop services required.\u003c\/p\u003e\n\u003ch3\u003eWhat gaskets are included?\u003c\/h3\u003e\n\u003cp\u003eThe kit includes head gaskets, base gaskets, exhaust gaskets, assembly lube, and full installation instructions.\u003c\/p\u003e\n\u003ch3\u003eWill this kit alone give me the best power gains?\u003c\/h3\u003e\n\u003cp\u003eThe base kit delivers the displacement bump. S\u0026amp;S recommends pairing it with CNC head porting, performance cams, and upgraded exhaust and intake for maximum performance.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit both 883 and 1200 Sportsters?\u003c\/h3\u003e\n\u003cp\u003eYes — the kit converts both 883cc and 1200cc models up to 1250cc displacement.\u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53040423633007,"sku":"T14-662691","price":1008.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_8bc7f2e5-c88a-43ab-b918-ee891c5c2989.png?v=1779567146","url":"https:\/\/vtwinbikers.com\/products\/s-s-cycle-conversion-kits-1986-2021-harley-davidson-sportster-models-2","provider":"Vtwinbikers","version":"1.0","type":"link"}