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

Description

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