{"product_id":"polini-78-8cc-big-bore-kit-for-vespa-piaggio-4t-50cc-engines","title":"Polini 78.8cc Big Bore Kit for Vespa Piaggio 4T 50cc Engines","description":"\u003ch2\u003ePolini 78.8cc Big Bore Kit for Vespa Piaggio 4T 50cc Engines\u003c\/h2\u003e\u003cp\u003eThis upgrade kit enlarges a 49cc Piaggio 4-stroke engine to 78.8cc, aiming to add power and speed. Its main parts are a finned aluminum cylinder and a flat-top piston, so it suits anyone looking to improve their scooter's performance. It is one of the \u003ca href=\"\/collections\/vespa-parts\"\u003eVespa scooter parts\u003c\/a\u003e meant to raise both mid-range and top-end output. Intended for closed-course competition and off-road riding, this kit is not meant for use on public roads.\u003c\/p\u003e\u003ch3\u003eBuild and Parts Included\u003c\/h3\u003e\u003cp\u003eThe cylinder is made from finned aluminum alloy, which helps it shed heat. The package also contains a flat-top piston, a set of piston rings, and every gasket and fastener needed for fitting. The compression ratio is 11.6:1, designed with maximum power output in mind.\u003c\/p\u003e\u003ch3\u003ePower and Gearing Benefits\u003c\/h3\u003e\u003cp\u003eBeyond the larger displacement, this kit comes with a 14:43 gear-up ratio, which is a 60% change from the stock 11:54. That gearing change is meant to support higher top speed, so it fits racing and other competitive riding.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e 78.8cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression Ratio:\u003c\/strong\u003e 11.6:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear-Up Ratio:\u003c\/strong\u003e 14:43\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Material:\u003c\/strong\u003e Aluminum alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 140.0223\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e Italy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Vespa and Piaggio 4-stroke 49cc engines (2-valve and 4-valve) with 78.8cc big bore upgrade\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Models\u003c\/h3\u003e\u003cp\u003eWorks with:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVespa LX 50 (2006-2009, 4-stroke 2-valve)\u003c\/li\u003e\n\u003cli\u003eVespa LX 50 (2010-2014, 4-stroke 4-valve)\u003c\/li\u003e\n\u003cli\u003eVespa S 50 (2009-2014, 4-stroke 4-valve)\u003c\/li\u003e\n\u003cli\u003eVespa Primavera 50 4V Carb (2015-2019)\u003c\/li\u003e\n\u003cli\u003eVespa Sprint 50 4V Carb (2015-2019)\u003c\/li\u003e\n\u003cli\u003ePiaggio Fly 50 (4T)\u003c\/li\u003e\n\u003cli\u003eScootcoupe P50\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/vespa-parts\"\u003eVespa Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-cylinder-kits\"\u003eScooter Big Bore \u0026amp; Cylinder Kits\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-engines\"\u003eScooter Engines \u0026amp; Engine Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51138149417017,"sku":"TT-24466","price":304.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/polini-78-8cc-big-bore-kit-for-vespa-piaggio-4t-50cc-engines-1.jpg?v=1794372219","url":"https:\/\/www.trendtimes.com\/products\/polini-78-8cc-big-bore-kit-for-vespa-piaggio-4t-50cc-engines","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}