Keith Black KB292.030 1000cc Piston Set .030 Oversize

Keith Black dome piston set is .030 oversize with a 8.2 compression ratio for 1972-1985 XL 1000cc models.

The Keith Black KB292.030 1000cc Piston Set .030 Oversize features a hypereutectic alloy cast in a permanent steel mold. This construction supports a lightweight piston design intended to help produce more power, use less fuel, and provide long-lasting performance. The set is designed for a 3.188-inch bore and has a 9:1 compression ratio.

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

For proper break-in, run the engine at moderate speeds for at least 500 miles and avoid excessive operation in lower gears. The Keith Black KB292.030 piston set fits 1972–1981 Harley-Davidson XL applications as specified by the supplier. This product is supplied as a set. Installation instructions are referenced by the supplier at: http://www.vtwinmfg.com/Instructions/MS/KB%20Inst.%20Guide%20XL%20Dome%20Pistons%20and%20Fitment.pdf

Features:

• Brand: Keith Black
• Part Number: KB292.030
• Product Type: 1000cc piston set
• Oversize: .030 oversize
• Bore: Designed for a 3.188-inch bore
• Compression Ratio: 9:1
• Material: Hypereutectic alloy
• Construction: Cast in a permanent steel mold
• Design: Low heat transfer alloy with high compression ring placement
• Fitment: 1972–1981 Harley-Davidson XL applications
• Unit of Measure: Set

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