{"product_id":"ssp-g-gy6-67mm-4v-cylinder-head","title":"SSP-G 67mm 4-Valve Cylinder Head - GY6-B 57mm Stud Spacing","description":"\u003cp\u003eThis \u003cstrong\u003eSSP-G 67mm four-valve cylinder head\u003c\/strong\u003e is a Cygnus-style performance head for GY6 B-case four-stroke engine builds with 57mm stud spacing. Give your off-road project a four-valve top end with the cam, roller rockers, timing sprocket, studs, and nuts included. The head pairs a finned body with blue anodized head and cam covers for a distinctive finish. Designed for the 67mm application described as a 232cc build, this is a cylinder head assembly, not a complete displacement kit.\u003c\/p\u003e\u003cp\u003eThis product is intended for off-road use only. This product is not intended for use on public roads or land.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-valve layout:\u003c\/strong\u003e Cygnus-style head design for a compatible GY6 B-case performance build.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValvetrain included:\u003c\/strong\u003e Supplied with a cam and roller rockers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild hardware included:\u003c\/strong\u003e Includes timing sprocket, studs, and nuts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnodized covers:\u003c\/strong\u003e Blue head and cam covers complement the finned head body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDefined B-case fitment:\u003c\/strong\u003e Requires 57mm cylinder-stud spacing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam-chain requirement:\u003c\/strong\u003e Uses a 96-link cam chain, sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e SSP-G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 169-572\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart type:\u003c\/strong\u003e Performance cylinder head assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead design:\u003c\/strong\u003e Cygnus-style, four-valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore application:\u003c\/strong\u003e 67mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild displacement reference:\u003c\/strong\u003e 232cc; complete engine configuration determines displacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine case:\u003c\/strong\u003e GY6 B-case four-stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired stud spacing:\u003c\/strong\u003e 57mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake valve diameter:\u003c\/strong\u003e 25mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust valve diameter:\u003c\/strong\u003e 23mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake port diameter:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust port diameter:\u003c\/strong\u003e 27mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall height:\u003c\/strong\u003e 144mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired cam chain:\u003c\/strong\u003e 96L, not included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake valve lash:\u003c\/strong\u003e 0.10mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust valve lash:\u003c\/strong\u003e 0.12mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded components:\u003c\/strong\u003e Head, cam, roller rockers, anodized head and cam covers, timing sprocket, studs, and nuts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eEngine application\u003c\/th\u003e\n\u003cth\u003eRequired configuration\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGY6 QMI\/QMJ 152\/157 engine families\u003c\/td\u003e\n\u003ctd\u003eB-case build with 57mm stud spacing and compatible 67mm cylinder configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther compatible makes and models\u003c\/td\u003e\n\u003ctd\u003eSame B-case, stud-spacing, cylinder, and valvetrain requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eCheck the engine code and measure the cylinder-stud spacing before ordering. A QMI\/QMJ or 152\/157 engine designation alone does not confirm B-case fitment. Match the cylinder configuration, cam-chain length, and installation clearances to your build. Cygnus-style describes the head design and does not establish direct Yamaha Cygnus fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThis product is intended for off-road use only. This product is not intended for use on public roads or land.\u003c\/strong\u003e\u003c\/p\u003e","brand":"SSP-G","offers":[{"title":"Default Title","offer_id":67964658123073,"sku":"169-572","price":829.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/795922.jpg?v=1792945436","url":"https:\/\/azscooterparts.com\/products\/ssp-g-gy6-67mm-4v-cylinder-head","provider":"AZScooterParts","version":"1.0","type":"link"}