{"product_id":"s-s-cycle-86-21-sportster-models-1250cc-conversion-kit-wrinkle-black","title":"S\u0026S Cycle 86-21 Sportster Models 1250cc Conversion Kit - Wrinkle Black","description":"This kit converts 1986-'21 883cc and 1200cc HD Sportster models to 1250cc displacement. No machining or rebalancing is required. Kit contains forged flat topped 3-9\/16\" bore pistons with coated piston skirts, S\u0026amp;S 3-9\/16\" bore cylinders, MLS head gaskets, base gaskets, exhaust gaskets, assembly lube, and instructions. 883 cylinder heads may not be used with this kit. For the best performance CNC head porting, performance cams, exhaust and intake upgrades are recommended.\n\u003cp\u003eUpgrade compatible 1986-2021 Harley-Davidson Sportster 883cc and 1200cc models with the S\u0026amp;S Cycle 910-0691 1250cc Conversion Kit. Designed to increase engine displacement without machining or crankshaft rebalancing, this kit provides a practical foundation for improved torque and overall engine performance.\u003c\/p\u003e\n\u003cp\u003eThe kit includes forged flat-top 3-9\/16-inch-bore pistons with coated skirts, S\u0026amp;S 3-9\/16-inch-bore cylinders, MLS head gaskets, base gaskets, exhaust gaskets, assembly lube, and installation instructions. The supplied components are designed to support a complete conversion while helping simplify installation. This kit is finished in wrinkle black for a distinctive appearance that complements many Sportster engine builds.\u003c\/p\u003e\n\u003cp\u003eFor optimal results, S\u0026amp;S Cycle recommends combining the conversion with CNC head porting, performance camshafts, exhaust upgrades, and intake improvements. The original 883 cylinder heads are not compatible with this kit, so verify cylinder head compatibility and all supporting engine components before installation. The kit is intended for powersports applications and is not emissions compliant for use on pollution-controlled motor vehicles. Check applicable regulations and confirm vehicle fitment before purchase.\u003c\/p\u003e\n\u003cp\u003eFitment includes select Harley-Davidson Sportster models such as the XL883N Iron 883, XL1200X Forty-Eight, XL1200V Seventy-Two, and XL883L SuperLow. Always verify the exact model year, engine configuration, and required supporting components before ordering or beginning installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1250cc displacement conversion for compatible 1986-2021 Harley-Davidson Sportster 883cc and 1200cc models\u003c\/li\u003e\n\u003cli\u003eNo machining or engine rebalancing required for installation\u003c\/li\u003e\n\u003cli\u003eForged flat-top 3-9\/16-inch-bore pistons with coated piston skirts\u003c\/li\u003e\n\u003cli\u003eS\u0026amp;S 3-9\/16-inch-bore wrinkle-black cylinders\u003c\/li\u003e\n\u003cli\u003eIncludes MLS head gaskets, base gaskets, exhaust gaskets, assembly lube, and instructions\u003c\/li\u003e\n\u003cli\u003e883 cylinder heads are not compatible with this conversion kit\u003c\/li\u003e\n\u003cli\u003ePerformance upgrades such as CNC head porting, cams, exhaust, and intake components are recommended\u003c\/li\u003e\n\u003cli\u003eNot emissions compliant for use on pollution-controlled motor vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson XL1200V Seventy-Two Base 2012\u003cbr\u003e\nHarley Davidson XL1200V Seventy-Two Base 2013\u003cbr\u003e\nHarley Davidson XL1200V Seventy-Two Base 2014\u003cbr\u003e\nHarley Davidson XL1200V Seventy-Two Base 2015\u003cbr\u003e\nHarley Davidson XL1200V Seventy-Two Base 2016\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2010\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2011\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2012\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2013\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2014\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2015\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2016\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2017\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2018\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2019\u003cbr\u003e\nHarley Davidson XL1200X Forty-Eight Base 2020\u003cbr\u003e\nHarley Davidson XL883L SuperLow Base 2012\u003cbr\u003e\nHarley Davidson XL883L SuperLow Base 2013\u003cbr\u003e\nHarley Davidson XL883L SuperLow Base 2014\u003cbr\u003e\nHarley Davidson XL883L SuperLow Base 2015\u003cbr\u003e\nHarley Davidson XL883L SuperLow Base 2016\u003cbr\u003e\nHarley Davidson XL883L SuperLow Base 2017\u003cbr\u003e\nHarley Davidson XL883L SuperLow Base 2018\u003cbr\u003e\nHarley Davidson XL883L SuperLow Base 2019\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2009\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2010\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2011\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2012\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2013\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2014\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2015\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2016\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2017\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2018\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2019\u003cbr\u003e\nHarley Davidson XL883N Iron 883 Base 2020\u003cbr\u003e\nHarley Davidson XLH1100 Base 1986\u003cbr\u003e\nHarley Davidson XLH1100 Base 1987\u003cbr\u003e\nHarley Davidson XLH1200 Base 1988\u003cbr\u003e\nHarley Davidson XLH1200 Base 1989\u003cbr\u003e\nHarley Davidson XLH1200 Base 1990\u003cbr\u003e\nHarley Davidson XLH1200 Base 1991\u003cbr\u003e\nHarley Davidson XLH1200 Base 1992\u003cbr\u003e\nHarley Davidson XLH1200 Base 1993\u003cbr\u003e\nHarley Davidson XLH1200 Base 1994\u003cbr\u003e\nHarley Davidson XLH1200 Base 1995\u003cbr\u003e\nHarley Davidson XLH1200 Base 1996\u003cbr\u003e\nHarley Davidson XLH1200 Base 1997\u003cbr\u003e\nHarley Davidson XLH1200 Base 1998\u003cbr\u003e\nHarley Davidson XLH1200 Base 1999\u003cbr\u003e\nHarley Davidson XLH1200 Base 2000\u003cbr\u003e\nHarley Davidson XLH1200 Base 2001\u003cbr\u003e\nHarley Davidson XLH1200 Base 2002\u003cbr\u003e\nHarley Davidson XLH1200 Base 2003\u003cbr\u003e\nHarley Davidson XLH883 Base 1986\u003cbr\u003e\nHarley Davidson XLH883 Base 1987\u003cbr\u003e\nHarley Davidson XLH883 Base 1988\u003cbr\u003e\nHarley Davidson XLH883 Base 1989\u003cbr\u003e\nHarley Davidson XLH883 Base 1990\u003cbr\u003e\nHarley Davidson XLH883 Base 1991\u003cbr\u003e\nHarley Davidson XLH883 Base 1992\u003cbr\u003e\nHarley Davidson XLH883 Base 1993\u003cbr\u003e\nHarley Davidson XLH883 Base 1994\u003cbr\u003e\nHarley Davidson XLH883 Base 1995\u003cbr\u003e\nHarley Davidson XLH883 Base 1996\u003cbr\u003e\nHarley Davidson XLH883 Base 1997\u003cbr\u003e\nHarley Davidson XLH883 Base 1998\u003cbr\u003e\nHarley Davidson XLH883 Base 1999\u003cbr\u003e\nHarley Davidson XLH883 Base 2000\u003cbr\u003e\nHarley Davidson XLH883 Base 2001\u003cbr\u003e\nHarley Davidson XLH883 Base 2002\u003cbr\u003e\nHarley Davidson XLH883 Base 2003\u003cbr\u003e\nHarley Davidson XLH883 Base 2004","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":67603356582204,"sku":"ssc910-0691","price":1008.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1865\/9007\/files\/ec3969a9529004beda9787952d32495b.jpg?v=1790746796","url":"https:\/\/necycleshop.com\/products\/s-s-cycle-86-21-sportster-models-1250cc-conversion-kit-wrinkle-black","provider":"NE Cycle Shop","version":"1.0","type":"link"}