Cometic C9763-065 EST Top End Gasket Kit Harley Sportster 1200 .065" Head Gasket

The Cometic C9763-065 is an EST (Extreme Sealing Technology) top end gasket kit designed for Harley-Davidson Sportster 1200cc Evolution engines from 1991-2003. This particular kit features a .065" thick multi-layer steel (MLS) head gasket, which is thicker than the standard .040" version, making it ideal for custom builds requiring lower compression ratios or compensation for deck height modifications.

Key Features:

• Three-piece head gasket design with aluminized stainless steel center sandwiched between two NBR coated stainless spring steel outer layers
• Base gaskets feature nitrile butadiene rubber (NBR) coating on both sides of stainless spring steel
• Includes blue Viton valve stem seals and AFM material
• Race style exhaust gasket that won't fray into the port
• One-piece Evolution rocker box base gasket made from .020" thick embossed Viton coated steel
• Embossed at cylinder bore and oil drain backs for superior sealing - cylinder dowel O-rings not required

This complete top end kit includes all necessary gaskets, seals, and O-rings to rebuild your top end. The NBR coated steel gaskets maintain their shape and won't extrude or fail like paper gaskets during normal cold to hot startups with rapid expansion. Designed for 3.500" bore applications.