Kb Pistons Hypereutectic Cast Piston - Pistons Shovel 80ci 7.2:1 .010 — Harley-Davidson Electra Glide, Super Glide, Wide Glide (1980-1984)

KB Pistons Hypereutectic cast piston for Shovel 80ci engines, forged from a 16% high-silicon alloy that resists thermal expansion and maintains tight ring seal in air-cooled motors. Sized .010 over stock bore and rated for compression ratios up to 10.5:1 on pump fuel.

Features

• 16% silicon hypereutectic alloy
• Low thermal expansion rate
• Tight piston-to-cylinder clearance
• Reduced engine noise
• Stock to mild compression ratio rated

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB288.010
• UPC: 800745063656
• Bore Size: .010 over
• Compression Ratio: 7.2:1
• Engine Displacement: 80 cubic inches (Shovel)
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Fits air-cooled Shovel 80ci engines. Designed for stock or mild compression ratios up to 10.5:1 running on pump fuel.

Frequently Asked Questions

What compression ratio are these pistons rated for?

7.2:1 compression, suitable for stock or mildly modified air-cooled Shovel engines running on regular pump fuel.

Why hypereutectic alloy instead of forged aluminum?

The 16% silicon content reduces thermal expansion, allowing tighter ring seal and quieter operation in air-cooled engines while resisting wear.

Are these .010 or .020 over?

These are .010 over stock bore. KB also offers .020 over and standard bore sizes — verify your honing before ordering.

Do I need to hone the cylinders?

Yes — hone cylinders to the proper bore size for the piston oversize before installation to ensure correct clearance.