Keith Black 80 Inch FLH-FX Piston Set.010 Oversize

Upgrade your Harley-Davidson with the Keith Black 80 Inch FLH-FX Piston Set in.010 oversize, delivering increased displacement and power for 1980–1984 Shovelhead models. Crafted from a hypereutectic alloy and cast in a permanent steel mold, these pistons maintain precise dimensions for durability while remaining lightweight. The design promotes better fuel efficiency and longer engine life through low heat transfer and optimized ring placement.

• Oversize:.010
• Bore: 3.498 inches
• Compression Ratio: 8:1
• Material: Hypereutectic alloy
• Casting Method: Permanent steel mold
• Application: Fits Harley-Davidson FL/FX models produced 1978–1984 (including FL, FLT, FX, FXR)
• Made in the USA
• Part Number: KB288.010
• Break-in: Run at moderate speeds for at least 500 miles to ensure proper seating of pistons and rings

For installation, consult the Keith Black Sym-Asym Piston Installation Guide.

Keith Black dome piston set is.010 oversize with a 7.2:1 compression ratio for 1980-1984 80 inch Shovelhead models.

Upgrade your Harley Davidson FL or FX with the Keith Black 80 inch FLH-FX Piston Set in.010 oversize. Crafted from the advanced hypereutectic alloy, these pistons are cast in a permanent steel mold to ensure precise dimensions and durability. This design allows for a lightweight piston that delivers increased power, improved fuel efficiency, and longer engine life. The pistons feature a 3.498-inch bore and an 8:1 compression ratio, optimized for performance and reliability. The low heat transfer properties of the alloy help keep the piston skirts cooler, minimizing expansion and enhancing longevity. High compression ring placement not only boosts power but also reduces detonation and increases the top ring temperature, improving overall engine efficiency. Proper break-in is essential; run the engine at moderate speeds for at least 500 miles, avoiding excessive low gear operation to ensure optimal seating of pistons and rings. For installation, consult the provided instructions: Keith Black Sym-Asym Piston Installation Guide. This piston set is designed specifically for Harley Davidson models from 1978 to 1984, including FL and FX series, ensuring a perfect fit and reliable performance. Complements with suggested items like piston ring sets and installation tools for a comprehensive upgrade. Made in the USA, this piston set offers a high-quality solution for enthusiasts seeking enhanced engine performance and durability.

Features:

• Material: Hypereutectic alloy for durability and heat resistance

• Casting Method: Permanent steel mold for precise dimensions

• Oversize:.010 for increased displacement and power

• Bore Size: 3.498 inches to fit specific Harley models

• Compression Ratio: 8:1 optimized for performance

• Low Heat Transfer: Keeps piston skirts cool for longevity

• High Ring Placement: Reduces detonation and enhances power

• Application: Fits 1978-1984 Harley Davidson FL and FX models

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