Kb Pistons Hypereutectic Cast Piston - Pistons Tc88 TO 95ci 9.3:1 .020 — Harley-Davidson Road King, Road King Classic, Electra Glide (1999-2007)

KB Pistons Hypereutectic cast piston for Twin Cam 88 to 95ci air-cooled Harley engines at 9.3:1 compression ratio. Cast from 16% silicon hypereutectic alloy with tight piston-to-wall clearances, low thermal expansion, and minimal ring blow-by for quieter operation and reduced cylinder wear.

Features

• 16% silicon hypereutectic alloy construction
• Low thermal expansion rate
• Tight piston-to-cylinder-wall clearances
• Optimal ring seal and reduced blow-by
• Suitable for stock to mild compression ratios up to 10.5:1 on pump fuel

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB348.020
• UPC: 800745068453
• Compression Ratio: 9.3:1
• Engine Displacement: Twin Cam 88 to 95ci
• Length: 9.5 in
• Width: 4.8 in
• Height: 4.6 in
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Fits air-cooled Twin Cam 88 to 95 cubic inch Harley-Davidson engines. Designed for stock or mild compression ratios up to 10.5:1 running on pump fuel.

Frequently Asked Questions

What compression ratio is this piston rated for?

9.3:1 compression ratio, suitable for stock to mild builds up to 10.5:1 on pump fuel.

Why hypereutectic instead of forged?

Hypereutectic alloy has high silicon content for tight ring seal, quieter operation, and reduced wear in air-cooled engines without the cost of forged pistons.

Will this piston fit a big-bore kit?

These are designed for Twin Cam 88 to 95ci displacement. Verify bore size and overbore specifications with KB Pistons before ordering for custom bore work.

Do I need new rings and a gasket kit?

Yes — plan to replace piston rings, gasket set, and cylinder honing when installing new pistons.