{"product_id":"cylinder-kit-polini-corsa-70cc-10mm-cast-iron-minarelli-vertical","title":"Cylinder Kit Polini Corsa 70cc 10mm cast iron Minarelli vertical","description":"\u003cp\u003eEngineered from the proven Polini Sport platform and refined for maximum performance, the Polini Corsa 70cc is a premium cast iron cylinder kit purpose-built for Yamaha BW and Slider models with Minarelli vertical engines. \u003cbr\u003e\u003cbr\u003eSpecifications include a 47mm bore cast iron cylinder with 5 transfer ports and oval exhaust, 2-ring piston with 10mm pin, high-compression aluminum head, complete gasket set, and dual 0.36mm carbon reed plates compatible with original reed valves.\u003cbr\u003e\u003cbr\u003eThe Corsa delivers approximately 11 hp through extended port timing, enlarged port cross-sections, and elevated compression ratios. Cast iron construction ensures durability and consistent high-speed performance. \u003cbr\u003e\u003cbr\u003eWith optimal tuning — 17.5mm+ carburetor, reinforced crankshaft, and racing exhaust—output reaches 10–11 hp reliably. \u003cbr\u003e\u003cbr\u003eNot street legal. Competition and closed-course use only.\u003c\/p\u003e","brand":"POLINI","offers":[{"title":"Default Title","offer_id":57919202951503,"sku":"166.0074\/R","price":199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/7626\/2223\/files\/MOPEDI.LV-2026-06-14T152436.915.jpg?v=1781440150","url":"https:\/\/mopedi.eu\/products\/cylinder-kit-polini-corsa-70cc-10mm-cast-iron-minarelli-vertical","provider":"MOPEDI LATVIA","version":"1.0","type":"link"}