Kb Pistons Hypereutectic Cast Piston - Pistons Shovel 88-89ci .020 — Harley-Davidson Electra Glide, Super Glide, Wide Glide (1980-1984)

KB Pistons Hypereutectic cast piston for Shovel 88–89ci engines, built with 16% silicon content for high thermal barrier properties and low expansion rate. Ideal for stock or mild compression ratios up to 10.5:1 on pump fuel, delivering tight ring seal and quieter, wear-resistant operation in air-cooled engines.

Features

• 16% silicon hypereutectic alloy
• Low thermal expansion rate
• Tight piston-to-cylinder wall clearance
• Suitable for stock to mild compression ratios up to 10.5:1
• Optimized for air-cooled engines

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB294.020
• UPC: 800745064110
• Engine Displacement: Shovel 88–89ci
• Piston Size: .020 oversized
• Length: 9.5 in
• Width: 4.8 in
• Height: 4.6 in
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Fits air-cooled Shovel-frame engines with 88–89ci displacement. Recommended for stock or mild compression ratios up to 10.5:1.

Frequently Asked Questions

What compression ratio should I run with these pistons?

These hypereutectic pistons are rated for stock to mild compression ratios up to 10.5:1 on pump fuel. Higher ratios may require racing fuel.

Why hypereutectic instead of forged?

Hypereutectic pistons offer lower thermal expansion and tighter ring seal for air-cooled engines. They run quieter and wear less than forged pistons in stock or mild builds.

Will these work with my Shovel top end?

These fit Shovel 88–89ci displacement engines. Verify your current bore size — the .020 marking indicates .020-inch oversize.

Do I need to degree the cam or rejet the carb?

Stock pistons typically require no carburetor changes. However, if upgrading from lower compression, a richer jetting may be needed.