Keith Black KB297.030 80-Inch FLH-FX Piston Set .030 Oversize

The Keith Black 390 hypereutectic 3.5 inch bore piston set has a 8.3:1 compression ratio and is oversize .030. Piston set alloy is cast in a permanent steel mold and includes rings.

The Keith Black KB297.030 80-Inch FLH-FX Piston Set .030 Oversize is designed for the applications identified in the product data, including 1978–1984 Harley-Davidson FL models and 1978–1980 Harley-Davidson FX models. This piston set is supplied as a set and is manufactured in Mexico.

Proper break-in is important for new pistons and rings. Run the engine at moderate speeds for at least 500 miles while avoiding excessive operation in lower gears. Refer to the piston fitment instructions for installation and fitment guidance.

For related components and installation support, the suggested 11-1366 80 Inch Shovelhead Piston Ring Set .030 and listed accessory items may be considered separately. The Keith Black KB297.030 part number is included here for product identification and reference.

Features:

• Brand: Keith Black
• Part Number: KB297.030
• Application: 80-inch FLH-FX piston set
• Oversize: .030
• Fitment: 1978–1984 Harley-Davidson FL models
• Fitment: 1978–1980 Harley-Davidson FX models
• Unit of Measure: Set
• Country of Origin: Mexico
• Break-In Guidance: Run the engine at moderate speeds for at least 500 miles while avoiding excessive operation in lower gears
• Instructions: Piston fitment instructions are referenced in the product data
• Accessory Items: 16-0622 - Ring-O-Matic Ring Compressor Tool Kit, 16-0029 - Connecting Rod Clamping Tool, 60-0167

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