Kb Pistons Hypereutectic Cast Piston - Pistons Shovel 80ci 8.3:1 .020 — Harley-Davidson Electra Glide, Super Glide, Wide Glide (1980-1984)

KB Pistons Hypereutectic cast piston for Harley Shovel 80ci engines with 8.3:1 compression ratio, machined to .020 oversize. Cast from a 16% silicon-content alloy that resists thermal expansion, enabling tight piston-to-wall clearance for improved ring seal and quieter operation in air-cooled engines.

Features

• Hypereutectic alloy with 16% silicon content
• Low thermal expansion for tight piston-to-cylinder clearance
• Optimized for stock to mild compression ratios up to 10.5:1
• Suitable for pump fuel operation

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB297.020
• UPC: 800745064479
• Compression Ratio: 8.3:1
• Oversize: .020
• Engine Displacement: 80ci (Shovel)
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Fits Harley-Davidson Shovel 80ci air-cooled engines. Designed for naturally aspirated, stock to mildly modified builds running pump fuel.

Frequently Asked Questions

What compression ratio is this piston rated for?

8.3:1 compression. Hypereutectic pistons are best suited for stock or mild builds up to 10.5:1 on pump fuel.

Why is .020 oversize specified?

Piston overbore compensates for wear in the cylinder. Bores must be honed to .020 oversize to match this piston's diameter.

Will this fit my 88ci Shovel?

No — this part is sized for 80ci displacement. Verify your engine's exact displacement and bore size before ordering.

Can I use these in a high-compression build?

Hypereutectic pistons are not recommended above 10.5:1 compression. Forged pistons are better suited for higher ratios and boost applications.