SSP-G GY6 B-Case 67mm Cylinder Head & Base Gasket Set

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. Key Features 67mm inner diameter — tailored for high-performance 67mm big bore kits without overlapping the cylinder bore B-Case specific fitment — machined for the 57mm stud spacing layout of GY6 B-Case engine blocks High-thermal resilience — composite materials engineered for elevated temperatures and pressures of modified engines Complete top-end seal — includes both cylinder head gasket and cylinder base gasket Compatibility Designed for 4-stroke GY6 architectures using a B-Case block configuration: GY6 4-stroke QMI152 / QMJ157 platforms B-Case only (57mm stud spacing) 67mm big bore configurations 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. Specifications Gasket inner diameter: 67mm Cylinder stud spacing: 57mm center-to-center (B-Case) Set contents: 1x cylinder head gasket, 1x cylinder base gasket Engine fitment: GY6 QMI/QMJ 152/157 (modified layouts) MPN / SKU: 169-576 California Prop 65 Warning: www.p65warnings.ca.gov