S&S Cycle 910-0179 80" Cylinder and Piston Kit Natural Finish

The S&S Cycle 910-0179 is a complete 80-inch displacement cylinder and piston kit featuring a 3-1/2" bore designed for Harley-Davidson Evolution Big Twin motorcycles. This comprehensive upgrade kit provides everything needed for a reliable engine displacement increase.

Complete Kit Includes:

• S&S 3-1/2" bore cylinders with natural aluminum finish
• Forged flat-topped pistons for enhanced durability
• Piston rings and wrist pins
• Head and base gaskets for complete installation

Key Specifications:

• Bore Size: 89mm (3-1/2")
• Displacement: 80 cubic inches
• Compression Ratio: 8.8:1
• Stroke Length: 4-1/4"
• Finish: Natural aluminum

The flat-topped forged pistons are designed to work with either stock cylinder heads or S&S Performance Replacement heads, providing flexibility for various engine configurations. The natural aluminum finish offers a classic look while maintaining excellent heat dissipation properties. Made in the U.S.A., this kit represents S&S Cycle's commitment to quality and performance for Evolution Big Twin engines.

Note: Professional installation by a skilled technician is recommended. Proper clearance checks and assembly specifications must be verified during installation.