Cometic C9028 Copper Cylinder Base Gasket .016" Harley Sportster 883-1200

The Cometic C9028 is a premium copper cylinder base gasket designed for Harley-Davidson Sportster models with 883cc and 1200cc Evolution engines from 1986 and later. Manufactured from solid copper material with a thickness of .016 inches, this heavy-duty base gasket provides exceptional sealing performance in high-performance and custom engine builds.

Key Features:

• Solid copper construction for superior heat dissipation and conformability
• .016 inch (0.016") thickness allows precise deck height adjustment
• Designed specifically for Harley-Davidson 883cc and 1200cc Sportster engines
• Ideal for performance engine builds where precise piston-to-head clearance is critical
• Reusable design with proper annealing between installations
• Compatible with 1986 and later Sportster Evolution models

Copper base gaskets are the preferred choice among professional engine builders for their ability to conform to slightly irregular mating surfaces and maintain a reliable seal under extreme cylinder pressures. The .016" thickness provides an excellent balance for achieving optimal squish clearance in performance applications while maintaining proper compression ratios.