Cometic C9881 MLS Head Gasket 4.125" Bore .027" Thickness TP Cylinders Pair

The Cometic C9881 is a high-performance Multi-Layer Steel (MLS) head gasket pair designed specifically for 4.125" bore TP (Thunder Performance) cylinders with solid dowels. Each gasket features a compressed thickness of .027" (27 thousandths), making it ideal for precision engine builds and performance applications on Harley-Davidson Evolution Big Twin motorcycles.

Multi-Layer Steel Construction:

• Multiple embossed layers of proprietary high-temperature coated stainless steel
• Load Control Embossments (LCE) provide even torque distribution across sealing surface
• Reduces bore distortion for improved piston ring seal and increased power
• Requires less clamp load than traditional gaskets while maintaining superior sealing
• Conforms to surface irregularities for reliable combustion sealing

Key Specifications:

• Bore Size: 4.125 inches
• Compressed Thickness: .027 inch
• Quantity: 1 pair (2 gaskets)
• Application: TP cylinders with solid dowels
• Material: Multi-Layer Stainless Steel with high-temperature coating

Cometic gaskets are engineered with state-of-the-art software and manufactured in the USA to meet the demanding requirements of high-performance and racing applications. The MLS design delivers exceptional sealing under extreme pressure and temperature conditions, making it the choice of professional engine builders worldwide.