Motorshop 80 Inch Overhead Valve Piston Set for Harley

This replica 3-1/2 inch bore piston set delivers an 8:1 compression ratio and standard size for Harley-Davidson FL and FX engines from 1978 through 1984.

The kit includes piston rings, 2 wrist pins and 4 circlips, providing the essential hardware for a complete top-end rebuild. Pistons feature a steel expansion control strut cast into each piston for added durability during operation.

Manufactured in Taiwan for consistent quality and precise fit. Break-in guidance is essential: run the engine at moderate speeds for at least 500 miles and avoid lugging in low gears to promote proper seating of rings and pistons.

Designed for engine rebuilds and restorations, this piston set is suitable for professional mechanics and dedicated enthusiasts alike. It is compatible with other suggested piston ring sets and wrist pin locks to support a full top-end upgrade.

Key specifications

• Bore: 3-1/2 inch
• Compression ratio: 8:1
• Piston size: standard
• Includes: piston rings, 2 wrist pins, 4 circlips
• Material feature: steel expansion control strut cast into pistons
• Manufactured in: Taiwan

Fitment

• Harley Davidson FL 1978–1984
• Harley Davidson FLT 1979–1983
• Harley Davidson FX 1978–1984
• Harley Davidson FXR 1982–1983

Replica 3-1/2 inch bore piston set has a 8:1 compression ratio and is standard size. Piston set includes piston rings 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast.

This Motorshop Replica 80 Inch Overhead Valve Piston Set is designed specifically for Harley Davidson FL and FX models from 1978 to 1984. Crafted in Taiwan, this piston kit ensures high-quality performance and durability for your classic motorcycle rebuild or restoration. The kit includes precisely engineered pistons with a 3-1/2 inch diameter, ideal for maintaining the authentic specifications of vintage Harley engines. Proper installation and break-in procedures are essential; it is recommended to run the engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears to ensure optimal piston and ring seating. This process promotes longevity and reliable operation of your rebuilt engine. The kit's comprehensive design makes it suitable for professional mechanics and dedicated enthusiasts alike, providing a seamless upgrade or repair solution for your Harley's top-end components. Compatibility with other suggested items such as piston ring sets and wrist pin locks makes this an essential component for a complete engine rebuild. With its high-quality construction and precise fit, this piston set offers a reliable foundation for restoring your Harley Davidson motorcycle's performance and appearance.

Features:

• Designed for Harley Davidson FL and FX models from 1978 to 1984

• Includes high-quality pistons with a 3-1/2 inch diameter

• Manufactured in Taiwan for consistent quality and durability

• Requires proper break-in procedure: run at moderate speeds for at least 500 miles

• Compatible with suggested piston ring sets and wrist pin locks

• Ideal for engine rebuilds and restorations

Fitment:
Harley Davidson FL 1978
Harley Davidson FL 1979
Harley Davidson FL 1980
Harley Davidson FL 1981
Harley Davidson FL 1982
Harley Davidson FL 1983
Harley Davidson FL 1984
Harley Davidson FLT 1979
Harley Davidson FLT 1980
Harley Davidson FLT 1981
Harley Davidson FLT 1982
Harley Davidson FLT 1983
Harley Davidson FX 1978
Harley Davidson FX 1979
Harley Davidson FX 1980
Harley Davidson FX 1981
Harley Davidson FX 1982
Harley Davidson FX 1983
Harley Davidson FX 1984
Harley Davidson FXR 1982
Harley Davidson FXR 1983