S&S Cycle 900-1039 Head Gasket for Royal Enfield 650 Twin 865cc Big Bore Kit

The S&S Cycle 900-1039 is a high-performance head gasket engineered specifically for use with S&S Cycle's 865cc big bore conversion kit on Royal Enfield 650 Twin motorcycles. This precision-manufactured gasket is designed to handle the increased bore size and compression requirements of the 865cc upgrade.

Key Features:

• Designed for 90mm bore size (increased from stock 78mm)
• Engineered for 11.0:1 compression ratio (up from stock 9.5:1)
• Premium materials ensure reliable sealing under high-performance conditions
• Essential component for S&S 865cc big bore kit installations
• Manufactured to S&S Cycle's exacting quality standards

This head gasket is a critical sealing component when upgrading your Royal Enfield Interceptor 650 or Continental GT 650 with S&S Cycle's big bore kit. It ensures proper sealing between the cylinder head and block at the increased displacement and compression levels. Designed for closed course competition use only.