Kb Pistons Hypereutectic Cast Piston - Pistons Shovel 80ci 7.2:1 .005 — Harley-Davidson Electra Glide, Super Glide, Wide Glide (1980-1984)

KB Hypereutectic cast piston for Shovelhead 80ci engines at 7.2:1 compression, machined with 16% silicon content for low thermal expansion and tight piston-to-cylinder clearance. Ideal for stock and mild compression air-cooled builds running pump fuel.

Features

• Hypereutectic alloy with 16% silicon content
• Low thermal expansion rate
• Tight piston-to-cylinder clearance
• Optimal ring seal and reduced engine noise
• Suitable for stock to mild compression (up to 10.5:1)

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB288.005
• UPC: 800745063632
• Engine: Shovelhead 80ci
• Compression Ratio: 7.2:1
• Clearance: .005 in
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Fits air-cooled Shovelhead 80ci engines with stock or mild compression builds up to 10.5:1.

Frequently Asked Questions

What compression ratio is this piston rated for?

7.2:1 nominal compression. Hypereutectics work best for stock to mild compression ratios up to 10.5:1 on pump fuel.

Why hypereutectic alloy instead of forged?

Hypereutectic's high silicon content provides excellent thermal properties and low expansion, ideal for air-cooled engines. Forged pistons require higher compression ratios and are better for racing.

Do I need to hone my cylinders for this piston?

Yes — ensure cylinders are properly honed and bored to the correct size. Your machine shop will size for the .005 in clearance specified.

Will this piston fit my Harley Shovelhead build?

Yes, this fits Shovelhead 80ci engines. Verify your engine displacement and current compression ratio before ordering.