{"product_id":"athena-p400485100073-big-bore-cylinder-kit-300cc-8-00-oversize-to-85-00mm-bore-13-3-1-compression-ratio","title":"Athena P400485100073 Big Bore Cylinder Kit (300cc) - 8.00 Oversize to 85.00mm Bore, 13.3:1 Compression Ratio","description":"Bore: 85.00mm\u003cbr\u003e Compression: 13.3:1 Compression\u003cbr\u003e Sizing: 8.00mm Oversize\u003cbr\u003e\u003cbr\u003eKits include aluminum cylinder with nickel-carbide coating designed with larger water jackets. Includes Forged piston, rings, clips and pin. Athena top-end gasket set includes required seals and hardware. Easy-to-follow step-by-step installation instructions. Most are bolt-on; no machining required except where noted.\u003cbr\u003e\u003cbr\u003eVehicle Fitment:\u003cbr\u003e\u003cbr\u003e2020-2023 Yamaha WR250F\u003cbr\u003e 2019-2023 Yamaha YZ250F\u003cbr\u003e 2021-2023 Yamaha YZ250F Monster Energy Yamaha Racing Edition\u003cbr\u003e 2020-2023 Yamaha YZ250FX","brand":"Athena","offers":[{"title":"Default Title","offer_id":44218395787386,"sku":"8748978","price":1003.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0004\/3312\/7455\/files\/7fdf7ac60ba74cd0854e15697ae1589c.jpg?v=1790993083","url":"https:\/\/www.powersportsuperstore.com\/products\/athena-p400485100073-big-bore-cylinder-kit-300cc-8-00-oversize-to-85-00mm-bore-13-3-1-compression-ratio","provider":"Powersport Superstore","version":"1.0","type":"link"}