Keith Black KB263.060 74-Inch FLH-FX Piston Set .060 Oversize

Keith Black 390 hypereutectic piston set is .060 oversize and is for 3.438 inch bore. Pistons have a compression of 9.0:1.

The Keith Black KB263.060 74-inch FLH-FX Piston Set .060 Oversize is designed for specified Harley-Davidson FL applications from 1941 through 1950. This piston set is supplied as a set and is identified by part number KB263.060.

After installation, run the engine at moderate speeds for at least 500 miles. Avoid excessive running in lower gears during this break-in period to help properly seat the new pistons and rings. Refer to the Keith Black Sym-Asym Piston Installation Guide for installation information.

Suggested and accessory items include the 11-1363 80 inch Shovelhead Piston Ring Set Standard, 16-0622 Ring-O-Matic Ring Compressor Tool Kit, 16-0029 Connecting Rod Clamping Tool, and 60-0167. Country of origin is Mexico.

Features:

• Brand: Keith Black
• Part Number: KB263.060
• Application: 74-inch FLH-FX
• Oversize: .060
• Product Type: Piston set
• Fitment: 1941-1950 Harley-Davidson FL
• Unit of Measure: Set
• Break-In Requirement: Run the engine at moderate speeds for at least 500 miles and avoid excessive running in lower gears

Fitment:
Harley Davidson FL 1941
Harley Davidson FL 1942
Harley Davidson FL 1943
Harley Davidson FL 1944
Harley Davidson FL 1945
Harley Davidson FL 1946
Harley Davidson FL 1947
Harley Davidson FL 1948
Harley Davidson FL 1949
Harley Davidson FL 1950
Harley Davidson FL 1951
Harley Davidson FL 1952
Harley Davidson FL 1953
Harley Davidson FL 1954
Harley Davidson FL 1955
Harley Davidson FL 1956
Harley Davidson FL 1957
Harley Davidson FL 1958
Harley Davidson FL 1959
Harley Davidson FL 1960
Harley Davidson FL 1961
Harley Davidson FL 1962
Harley Davidson FL 1963
Harley Davidson FL 1964
Harley Davidson FL 1965
Harley Davidson FL 1966
Harley Davidson FL 1967
Harley Davidson FL 1968
Harley Davidson FL 1969
Harley Davidson FL 1970
Harley Davidson FL 1971
Harley Davidson FL 1972
Harley Davidson FL 1973
Harley Davidson FL 1974
Harley Davidson FL 1975
Harley Davidson FL 1976
Harley Davidson FL 1977
Harley Davidson Fx 1971
Harley Davidson Fx 1972
Harley Davidson Fx 1973
Harley Davidson Fx 1974
Harley Davidson Fx 1975
Harley Davidson Fx 1976
Harley Davidson Fx 1977