Complete cylinder head and base gasket set for GY6 B-Case 67mm big bore engine builds. Engineered specifically for modified large-bore configurations using the B-Case block with 57mm stud spacing. Includes both gaskets needed to properly seal the combustion chamber and maintain optimal crankcase compression. SKU: 169-576.
Designed for 4-stroke GY6 architectures using a B-Case block configuration:
Important � stud spacing check required: Standard GY6 engines (A-Case) use 54mm cylinder stud spacing. This gasket set is built for the 57mm spacing found on GY6 B-Case variants only. Measure your engine casing studs center-to-center before ordering to confirm proper alignment.
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