{"product_id":"hammerhead-63mm-180cc-big-bore-kit-for-150cc-gy6-engines","title":"Hammerhead Engine Top End Assembly, 63mm (180cc) for 150cc, GY6 Engines","description":"\u003cdiv id=\"yiv4159503983yui_3_16_0_ym19_1_1460043407235_3221\"\u003e63mm Big Bore Kit for 150cc and 125cc GY6 4-stroke engines and engine based vehicles. Crankcase modifications are needed for this cylinder kit. Increases displacement to 180cc!\u003c\/div\u003e\n\u003cdiv id=\"yiv4159503983yui_3_16_0_ym19_1_1460043407235_3221\"\u003e\u003cspan id=\"yiv4159503983yui_3_16_0_ym19_1_1460043407235_3222\"\u003e\u003cbr\u003eIt is recommended to upgrade the jets in the carburetor when adding this modification.\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes cylinder, piston, pin, circlips, rings, head gasket and base gasket\u003c\/li\u003e\n\u003cli\u003eUpgrades to 180cc\u003c\/li\u003e\n\u003cli\u003eBore: 63mm\u003c\/li\u003e\n\u003cli\u003eOverall Height: 90.5mm\u003c\/li\u003e\n\u003cli\u003eCylinder Sleeve Outer Diameter: 64.9mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003eNO WARRANTY OR RETURNS ON BIG BORE PRODUCTS THAT REQUIRE CASE MODIFICATIONS.  BORE AT YOUR OWN RISK.  WE HIGHLY RECOMMEND HAVING PROFESSIONALS DO THIS JOB\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"HammerHead Performance","offers":[{"title":"Default Title","offer_id":53483576230253,"sku":"1100-1438_hhpPS","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/2710\/4621\/files\/1100-1438_6e3c871f-9e80-4cec-96eb-885b578e8a7f.jpg?v=1782378940","url":"https:\/\/hammerheadperformance.com\/products\/hammerhead-63mm-180cc-big-bore-kit-for-150cc-gy6-engines","provider":"HammerHead Performance","version":"1.0","type":"link"}