Kb Pistons Forged Alloy Piston - Pistons EVO 80ci 9.5:1 .005 — Harley-Davidson (1984-1999)

KB Pistons forged alloy piston set for EVO 80ci engines with 9.5:1 compression and .005 oversized bore. Made from 4032 forged alloy with 11% silicon content, these pistons deliver superior crack resistance under detonation and pre-ignition, making them ideal for street and race applications running power adders like NOS or supercharger boost.

Features

• 4032 forged alloy with 11% silicon content
• Superior crack resistance under detonation and pre-ignition
• Coated skirts on Twin Cam and Sportster applications
• All rings, wrist pins, and wrist pin locks included
• Sold as a pair

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB920C.005
• UPC: 800745155306
• Compression Ratio: 9.5:1
• Bore Size: .005 oversized
• Engine Displacement: EVO 80ci
• Dimensions (L x W x H): 9.5 in x 4.8 in x 4.6 in
• Weight: 2.5 lbs per pair
• Country of Origin: Mexico

Fitment

Fits EVO 80ci engines. Designed for street and race applications running power adders such as NOS or supercharger boost.

Frequently Asked Questions

What's included in this piston set?

A pair of pistons with all rings, wrist pins, and wrist pin locks needed for installation.

Do I need to order wrist pin locks separately?

No — wrist pin locks are included. Note that you need 2 locks per piston (4 total per pair).

Can I use these with forced induction or NOS?

Yes — 4032 forged alloy construction with 11% silicon makes these ideal for power adder applications.

Are replacement rings available if mine wear out?

Replacement rings are available but are special order items — contact KB Pistons directly for availability and lead time.