{"product_id":"athena-hyper-race-47-6-mm-domed-cylinder-kit-for-yamaha-vino-and-zuma-part-070100","title":"Athena Hyper Race 47.6 mm Domed Cylinder Kit for Yamaha Vino and Zuma, Part 070100","description":"The race version of the popular Athena 70cc big bore kit, available in one part number.  All parts are available separately for custom builds.\n\u003cp\u003eThe Athena Hyper Race Domed Cylinder Kit is a race-oriented 47.6 mm big bore cylinder kit designed for select Yamaha 50cc two-stroke scooters. This complete kit includes the cylinder, cylinder head, piston assembly, reed components, and required gaskets for a performance-focused engine build. Athena manufacturer part number 070100 and vendor part number 68-4500 identify this kit for ordering and application reference.\u003c\/p\u003e\u003cp\u003eDesigned for fitment on 1998–2000 Yamaha CW50 Zuma II models and 2002–2005 Yamaha YJ50 and YJ50RA Vino models, this kit provides the core components needed to replace or upgrade the original top end. Verify the scooter model, year, and engine configuration before installation to ensure compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCylinder kit includes cylinder, head, piston assembly, reeds, and gaskets.\u003c\/li\u003e\n\u003cli\u003eDomed 47.6 mm piston and cylinder configuration supports a race-style big bore setup.\u003c\/li\u003e\n\u003cli\u003eAthena Hyper Race design is intended for custom performance builds and competition-oriented applications.\u003c\/li\u003e\n\u003cli\u003eAll components are available separately from Athena for tailored engine builds.\u003c\/li\u003e\n\u003cli\u003eProfessional installation and proper engine tuning are recommended for reliable operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1997 Yamaha CW50 Zuma II\u003cbr\u003e\n1998 Yamaha CW50 Zuma II\u003cbr\u003e\n1999 Yamaha CW50 Zuma II\u003cbr\u003e\n2000 Yamaha CW50 Zuma II\u003cbr\u003e\n2001 Yamaha CW50 Zuma II\u003cbr\u003e\n2002 Yamaha YJ50 Vino\u003cbr\u003e\n2002 Yamaha YJ50RA Vino Classic\u003cbr\u003e\n2003 Yamaha YJ50 Vino\u003cbr\u003e\n2003 Yamaha YJ50RA Vino Classic\u003cbr\u003e\n2004 Yamaha YJ50 Vino\u003cbr\u003e\n2004 Yamaha YJ50RA Vino Classic\u003cbr\u003e\n2005 Yamaha YJ50RA Vino Classic","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":67549882482923,"sku":"68-4500","price":225.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/4084-5b89acc93c764.jpg?v=1790697950","url":"https:\/\/ctracingservices.com\/products\/athena-hyper-race-47-6-mm-domed-cylinder-kit-for-yamaha-vino-and-zuma-part-070100","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}