{"product_id":"s-s-cycle-conversion-kits-1986-2019-harley-davidson-sportster-models-1","title":"S\u0026S Cycle 1200cc Conversion Piston Kit - Harley Sportster 883cc","description":"\u003c!-- vt:seo-start --\u003e\n\u003cdiv class=\"vt-brand-bio\" style=\"background:#f6f6f6;border-left:4px solid #c8102e;padding:14px 18px;margin:0 0 20px;border-radius:4px;\"\u003e\n\u003ch2 style=\"margin:0 0 6px;font-size:1.05em;\"\u003eAbout S\u0026amp;S Cycle\u003c\/h2\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.6;\"\u003eS\u0026amp;S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S\u0026amp;S. Few names carry more weight with engine builders in this space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"line-height:1.65;\"\u003eThis S\u0026amp;S Cycle 1200cc conversion kit offers a direct path to increased displacement for 883cc Harley-Davidson Sportster engines. It's engineered to provide a significant performance boost without requiring extensive machine work, flywheel rebalancing, or cylinder head modifications. The dished piston design ensures a streetable compression ratio with your stock 883cc heads.\u003c\/p\u003e\n\u003ch3 style=\"margin:20px 0 6px;\"\u003eWhy riders pick this\u003c\/h3\u003e\u003cul style=\"padding-left:20px;margin:0 0 16px;\"\u003e\n\u003cli style=\"margin:3px 0;\"\u003eConverts 883cc Sportster to 1200cc\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eNo machine work on cylinders or heads\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eStock flywheels do not require rebalancing\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eDished pistons for streetable compression\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eStraightforward top-end installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRiders seeking to unlock more power from their 883cc Harley-Davidson Sportster will find this S\u0026amp;S Cycle 1200cc conversion kit to be an efficient and effective upgrade. Designed for a straightforward installation, this kit allows you to transform your engine into a more potent 1200cc configuration, delivering a noticeable increase in both torque and horsepower. The beauty of this kit lies in its ability to provide a substantial performance gain without the complexities often associated with big-bore conversions.\u003c\/p\u003e\u003ch3\u003eSimplified Power Enhancement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRequires no cylinder boring or cylinder head modifications\u003c\/li\u003e\n\u003cli\u003eFlywheel rebalancing is not necessary due to matched piston weight\u003c\/li\u003e\n\u003cli\u003eDished dome piston design maintains a streetable compression ratio\u003c\/li\u003e\n\u003cli\u003eInstalls with the same process as a standard top-end refresh\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUnlock Your Sportster's Potential\u003c\/h3\u003e\u003cp\u003eThis S\u0026amp;S Cycle conversion kit is a smart choice for any 883cc Sportster owner aiming for a more exhilarating ride. By designing the pistons to match the weight of the stock 883cc units, S\u0026amp;S ensures that your factory flywheels will operate smoothly without needing rebalancing. This, combined with the no-machining requirement, makes the upgrade process much simpler and more accessible, allowing you to get back on the road with more power sooner.\u003c\/p\u003e\n\u003ch3 style=\"margin:20px 0 6px;\"\u003eSpecifications\u003c\/h3\u003e\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 910-0688\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Engine Components \/ Piston Sets - Powersports\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 22.6 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eCommon questions\u003c\/h3\u003e\u003cdiv class=\"vt-faq\"\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eDo I need to machine my cylinders or cylinder heads for this conversion kit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eNo, this kit is designed for direct installation into stock 883cc cylinders and works with stock 883cc cylinder heads, requiring no machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eWill my stock flywheels need to be rebalanced with these new pistons?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eNo, the pistons in this kit are weighted to match stock 883cc pistons, so your stock flywheels will not require rebalancing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eWhat is the intended compression ratio with this kit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThe dished dome design of these pistons is engineered to deliver a streetable 9.4:1 compression ratio when paired with stock 883cc cylinder heads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vt-confidence\" style=\"border-top:1px solid #e5e5e5;margin:24px 0 0;padding:16px 0 0;font-size:0.92em;line-height:1.6;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOrdering from Vtwinbikers\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli\u003eBrand new, sourced through authorized US distribution — never used, never grey-market.\u003c\/li\u003e\n\u003cli\u003eNot sure it fits? Use \u003cstrong\u003eShop by Bike\u003c\/strong\u003e to filter by your year and model, or email us and we will confirm before you order.\u003c\/li\u003e\n\u003cli\u003eHarley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vtwinbikers.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Piston Sets - Powersports\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/all\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"S\u0026S Cycle\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/s-s-cycle\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"S\u0026S Cycle 1200cc Conversion Piston Kit - Harley Sportster 883cc\",\"item\":\"https:\/\/vtwinbikers.com\/products\/s-s-cycle-conversion-kits-1986-2019-harley-davidson-sportster-models-1\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Do I need to machine my cylinders or cylinder heads for this conversion kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, this kit is designed for direct installation into stock 883cc cylinders and works with stock 883cc cylinder heads, requiring no machining.\"}},{\"@type\":\"Question\",\"name\":\"Will my stock flywheels need to be rebalanced with these new pistons?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, the pistons in this kit are weighted to match stock 883cc pistons, so your stock flywheels will not require rebalancing.\"}},{\"@type\":\"Question\",\"name\":\"What is the intended compression ratio with this kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The dished dome design of these pistons is engineered to deliver a streetable 9.4:1 compression ratio when paired with stock 883cc cylinder heads.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53040436248687,"sku":"T14-662685","price":1128.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_a54a649f-a66c-4dd4-b2fd-68e74f92e11c.png?v=1779566578","url":"https:\/\/vtwinbikers.com\/products\/s-s-cycle-conversion-kits-1986-2019-harley-davidson-sportster-models-1","provider":"Vtwinbikers","version":"1.0","type":"link"}