{"product_id":"polini-contessa-big-bore-kit-72cc-yamaha-zuma-50-2t-1100-1459","title":"Polini Contessa Big Bore Kit (72cc); Yamaha Zuma 50 2T Horiz","description":"\u003cp\u003ePolini's entry-level Contessa 72cc Big Bore kit is relatively easy to install, tune, and improve the performance of your Genuine 50cc, Yamaha Zuma or BWS 50cc, and other bikes with 2T horizontal Minarelli engines. It's the ideal starter big bore kit for someone looking to get significant gain without excess tuning time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAluminum piston: 47mm\u003c\/li\u003e\n\u003cli\u003e2 piston rings: 47mm\u003c\/li\u003e\n\u003cli\u003e10mm wrist pin w\/circlips\u003c\/li\u003e\n\u003cli\u003eCast-iron cylinder\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e2 exhaust studs: 6mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width: 100.036%; height: 137.2px;\" width=\"100%\"\u003e\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 52.9004%; height: 19.6px;\"\u003eAdly (various models)\u003c\/td\u003e\n\u003ctd style=\"width: 46.6983%; height: 19.6px;\"\u003eAprilia SR (Pre-2000)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 52.9004%; height: 19.6px;\"\u003eGenuine Buddy 50\u003c\/td\u003e\n\u003ctd style=\"width: 46.6983%; height: 19.6px;\"\u003eGenuine Rattler 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 52.9004%; height: 19.6px;\"\u003eGenuine RoughHouse 50\u003c\/td\u003e\n\u003ctd style=\"width: 46.6983%; height: 19.6px;\"\u003eYamaha BWS 50cc \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 52.9004%; height: 19.6px;\"\u003eYamaha Vino and Jog 2T\u003c\/td\u003e\n\u003ctd style=\"width: 46.6983%; height: 19.6px;\"\u003eYamaha Zuma \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 52.9004%; height: 39.2px;\"\u003eMany other bikes with Minarelli horizontal engines\u003c\/td\u003e\n\u003ctd style=\"width: 46.6983%; height: 39.2px;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e It's important to break in your big bore kit properly. We recommend riding 200 - 300 miles before running the bike at full throttle for an extended period of time. \u003c\/p\u003e\u003cp style=\"margin-bottom: 0in;\" class=\"MsoNormal\"\u003e\u003cb\u003eAbout Polini:\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003e\u003c\/b\u003eFor over 50 years,\u003cb\u003e \u003c\/b\u003ePolini has stood unparalleled in the racing and tuning scene.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003ePolini has powered both off-road and road racing legends to multiple MXGP and MotoGP world championships including the legendary Valentino Rossi.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003ePolini sets the standard for high-end tuning and top-quality performance components.\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp style=\"margin-bottom: 0in;\" class=\"MsoNormal\"\u003e \u003c\/p\u003e\u003cp style=\"margin-bottom: 0in;\" class=\"MsoNormal\"\u003eMade in Italy.\u003c\/p\u003e\u003cp style=\"margin-bottom: 0in;\" class=\"MsoNormal\"\u003e \u003c\/p\u003e\u003ch4 style=\"color: #983d3c;\"\u003eThis product is intended for off-road use only.\u003c\/h4\u003e\u003ch4 style=\"color: #983d3c;\"\u003eThis product is not intended for use on public roads or land.\u003c\/h4\u003e\u003ch4 style=\"color: #983d3c;\"\u003eThis product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003e*Performance upgrades are considered racing parts and are not covered by warranty.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.p65warnings.ca.gov\/sites\/default\/files\/downloads\/factsheets\/motor_vehicle_parts_fact_sheet.pdf\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 12.0pt; line-height: 107%;\"\u003eWARNING: California's Proposition 65\u003c\/span\u003e\u003c\/b\u003e\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Polini","offers":[{"title":"Default Title","offer_id":46759822721304,"sku":"1100-1459","price":219.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/products\/1100-1459_6d30928e-6226-4922-9181-d02c0d8842dd.jpg?v=1695304973","url":"https:\/\/www.scooterworks.com\/products\/polini-contessa-big-bore-kit-72cc-yamaha-zuma-50-2t-1100-1459","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}