Keith Black KB292.010 1000cc Piston Set .010 Oversize

Keith Black piston set is .010 oversize with a 8.2 compression ratio for 1972-1985 XL 1000cc models.

The Keith Black KB292.010 1000cc Piston Set .010 Oversize is designed for a 3.188-inch bore and features a 9:1 compression ratio. The hypereutectic alloy is cast in a permanent steel mold to produce a lightweight piston design intended to support power, fuel economy, and durability.

The alloy’s low heat transfer helps keep the skirts cooler, minimizing piston expansion. Combined with high compression ring placement, this design supports increased power and economy. High ring placement also helps reduce detonation and increase top ring temperature.

Proper break-in is important for new pistons and rings. Run the engine at moderate speeds for at least 500 miles and avoid excessive operation in lower gears during the break-in period. The set has a UOM of SET and is manufactured in the USA. Refer to the manufacturer’s fitment and installation instructions before installation.

The Keith Black KB292.010 fits 1972–1981 Harley-Davidson XL models as listed by the merchant.

Features:

• Product Type: 1000cc piston set
• Oversize: .010 oversize
• Bore: Designed for a 3.188-inch bore
• Compression Ratio: 9:1
• Material: Hypereutectic alloy
• Manufacturing: Cast in a permanent steel mold
• Design: Lightweight piston construction with low heat transfer
• Ring Placement: High compression ring placement
• Fitment: 1972–1981 Harley-Davidson XL models
• Unit of Measure: SET
• Country of Origin: USA

Fitment:
Harley Davidson XL 1972
Harley Davidson XL 1973
Harley Davidson XL 1974
Harley Davidson XL 1975
Harley Davidson XL 1976
Harley Davidson XL 1977
Harley Davidson XL 1978
Harley Davidson XL 1979
Harley Davidson XL 1980
Harley Davidson XL 1981
Harley Davidson XL 1982
Harley Davidson XL 1983
Harley Davidson XL 1984
Harley Davidson XL 1985