{"product_id":"cylinder-kit-athena-racing-70cc-12mm-pin-minarelli-vertical","title":"Cylinder Kit Athena Racing 70cc 12mm pin Minarelli vertical","description":"\u003cp\u003eAthena Racing Aluminium Cylinder 70cc – Minarelli Vertical\u003c\/p\u003e\n\u003cp\u003eHigh-end 70cc Racing cylinder kit from Athena for scooters with Minarelli vertical engines such as the Yamaha BW's, Yamaha Slider, MBK Booster and MBK Stunt. This complete kit features a 12 mm piston pin and is designed for maximum racing performance.\u003c\/p\u003e\n\u003cp\u003eThe newly developed Athena Racing cylinder uses an innovative mounting system. Instead of traditional cylinder studs, it is bolted directly to the cylinder base, similar to high-end racing concepts. This design removes the limitations imposed by studs, allowing for a significantly larger exhaust port with additional boost ports. As a result, this cylinder features one of the largest exhaust ports currently available for Minarelli vertical engines.\u003c\/p\u003e\n\u003cp\u003ePerformance gains are impressive, with an increase of approximately 3 to 4 hp compared to the previous Athena Racing version. The aluminum construction ensures excellent heat dissipation, making it ideal for high-performance setups.\u003c\/p\u003e\n\u003cp\u003eFor optimal results and improved cooling, the use of a Big Valve MXS Racing HighFlow intake system combined with a PWK carburetor of at least 21 mm is recommended. A reinforced crankshaft is strongly advised; for example, a high-performance crankshaft such as the Stage6 HPC is suitable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit contents :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAluminium cylinder with 5 transfer ports and oval exhaust with boost ports\u003c\/li\u003e\n\u003cli\u003eRacing piston 47.6 mm, single piston ring, 12 mm piston pin\u003c\/li\u003e\n\u003cli\u003eDirect base-mounted design\u003c\/li\u003e\n\u003cli\u003eHigh-compression cylinder head\u003c\/li\u003e\n\u003cli\u003eComplete gasket set (base gasket, head gasket, exhaust and reed valve gaskets)\u003c\/li\u003e\n\u003cli\u003eCarbon reed petals\u003c\/li\u003e\n\u003cli\u003eAll required mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompression ratio : 13.8:1\u003cbr\u003eApplication : Scooters with Minarelli vertical engine\u003cbr\u003eNot homologated \/ not street legal\u003c\/p\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57127950418255,"sku":"P400485100090","price":254.7,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/7626\/2223\/files\/MOPEDI.LV_-_2026-02-27T142603.107.jpg?v=1772195371","url":"https:\/\/mopedi.eu\/products\/cylinder-kit-athena-racing-70cc-12mm-pin-minarelli-vertical","provider":"MOPEDI LATVIA","version":"1.0","type":"link"}