Cometic C9552-030 Big Bore Base Gasket Kit 3.625" Bore .030" Thick Harley Evo 1340

The Cometic C9552-030 base gasket kit is engineered specifically for Harley-Davidson Evolution 1340cc engines from 1984 to 1999. This high-performance gasket set features a 3.625-inch (3-5/8") big bore diameter with a .030-inch thickness, designed to accommodate larger displacement builds and custom engine configurations.

Key Features:

• 3.625-inch big bore diameter for increased displacement applications
• .030-inch thick RCM (Rubber Coated Metal) construction for superior sealing
• Precision-engineered for 1984-1999 Harley-Davidson Evolution 1340 engines
• RCM material combines the strength of metal with rubber coating for optimal gasket compression
• Heavy-duty construction resists high temperatures and pressures
• Allows proper cylinder height adjustment and compression tuning

Cometic gaskets are manufactured using advanced materials and cutting techniques to ensure precise fitment and reliable sealing. The RCM construction provides excellent resistance to blow-out while maintaining flexibility to conform to cylinder surfaces. This gasket set is ideal for performance builds, big bore conversions, and engine rebuilds requiring precise base gasket thickness control.