C9102 Top-end gasket kit. XL900

When performing a top-end rebuild on a 1957 to 1971 XL900 Sportster, this Cometic top-end gasket kit provides the premium sealing components you need. Sold as a set, it features .032-inch copper cylinder head gaskets and .031-inch copper cylinder base gaskets, which offer exceptional durability and heat management for vintage Ironhead cylinders. This comprehensive kit includes all the necessary gaskets, seals, and O-rings to complete a top-end service, ensuring a leak-free assembly from the base gaskets up to the rocker boxes. It is an essential kit for any mechanic looking to restore compression and reliability to a classic 900cc Sportster engine using the best materials available.