{"product_id":"ssp-g-67mm-cylinder-kit-4-valve-gy6-b-161qmk-engines","title":"SSP-G 67mm Cylinder Kit 4 Valve | GY6-B 161QMK Engines","description":"\u003cp\u003ePush your GY6-B \/ Gy7 \/ 161QMK  build to 232cc with the \u003cstrong\u003eSSP-G 67mm 4V Cylinder Kit\u003c\/strong\u003e. This ceramic-coated cylinder with a forged piston is designed for the 4-valve Cygnus-style cylinder head and fits B-case GY6 4-stroke engines also called GY7 and marked with 161QMK engine codes. Pair it with a 66mm (+8.2mm) stroker crank to achieve a 232 cc displacement. Everything needed for the cylinder swap is included.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e67mm ceramic-coated cylinder\u003c\/li\u003e\n\u003cli\u003eForged piston\u003c\/li\u003e\n\u003cli\u003eRings, wrist pin \u0026amp; circlips\u003c\/li\u003e\n\u003cli\u003eHead gasket \u0026amp; base gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeramic-coated cylinder\u003c\/strong\u003e — improved heat dissipation and reduced friction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForged piston\u003c\/strong\u003e — stronger and lighter than cast for high-performance applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4V Cygnus-style head compatible\u003c\/strong\u003e — designed for 4-valve cylinder head setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e232cc capable\u003c\/strong\u003e — pair with a 66mm (+8.2mm) stroker crank for maximum displacement\u003c\/li\u003e\n\u003cli\u003eB-case (57mm stud spacing) GY6 fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Bore:\u003c\/strong\u003e 67mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Height:\u003c\/strong\u003e 76mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 103.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStud Spacing:\u003c\/strong\u003e 57mm (B-case)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWrist Pin Diameter:\u003c\/strong\u003e 15mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine:\u003c\/strong\u003e GY6 QMI\/QMJ 152\/157 (B-case long case)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Displacement:\u003c\/strong\u003e 232cc (with 66mm stroker crank)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis product is intended for off-road use only and is not intended for use on public roads.\u003c\/p\u003e","brand":"Primo Scooter Company","offers":[{"title":"Default Title","offer_id":49633430339843,"sku":"169-573","price":387.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0371\/8188\/2508\/files\/795929.webp?v=1789572057","url":"https:\/\/primoscootercompany.com\/products\/ssp-g-67mm-cylinder-kit-4-valve-gy6-b-161qmk-engines","provider":"Primo Scooter Company","version":"1.0","type":"link"}