Cometic C9552-010 Big Bore Base Gasket Set 3.625" for HD 1340 Evolution .010" Thick

The Cometic C9552-010 is a high-performance base gasket set designed specifically for Harley-Davidson 1340cc Evolution engines from 1984 to 1999. Engineered for big bore applications with a 3.625-inch (3 5/8") bore diameter, these gaskets are precision-manufactured to deliver exceptional sealing performance in high-compression builds.

Key Specifications:

• Bore Size: 3.625 inches (3 5/8") for big bore cylinder applications
• Thickness: .010 inch (10 thousandths) compressed thickness
• Material: RCM (Rubber Coated Metal) construction for superior sealing
• Fitment: Harley-Davidson 1340 Evolution engines (1984-1999)
• Application: Heavy-duty base gasket for cylinder-to-crankcase sealing

Features and Benefits:

• RCM gasket technology combines a steel core with rubber coating for excellent conformability and heat resistance
• Precision-cut bore openings ensure proper cylinder alignment and sealing
• Thin .010" profile allows for precise deck height adjustment and compression ratio tuning
• Designed to withstand extreme cylinder pressures in performance and racing applications
• Compatible with both stock and aftermarket big bore cylinder kits

Cometic gaskets are a trusted choice among professional engine builders and performance enthusiasts for their consistent quality and reliability. This base gasket set is ideal for engine rebuilds, performance upgrades, or anytime precise sealing and compression control are required.