Kb Pistons Forged Alloy Piston - Pistons 883 TO 1200 10.5:1 .010 — Harley-Davidson Sportster 883, Sportster 883 Hugger, Super Low (1986-2019)

KB Pistons forged alloy piston kit for Harley 883 to 1200cc conversion, made from 4032 forged alloy with 11% silicon content for superior crack resistance under detonation and pre-ignition. Engineered for street and race use, especially with power adders like NOS or forced induction.

Features

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

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB925C.010
• UPC: 800745154361
• Compression Ratio: 10.5:1
• Size: .010 oversized
• Length: 9.5 in
• Width: 4.8 in
• Height: 4.6 in
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Fits 883cc to 1200cc Harley conversion builds on Twin Cam and Sportster platforms suited for street or race applications with power adders.

Frequently Asked Questions

What's included in this kit?

Piston pair, rings, wrist pins, and wrist pin locks — everything needed for installation.

Can I use replacement rings later?

Yes, but replacement rings for these pistons are special order through KB Pistons.

Is this piston coated?

Yes — Twin Cam and Sportster applications feature coated skirts to reduce friction.

Will these pistons handle forced induction?

Yes — the 4032 forged alloy with 11% silicon content is designed to resist crack damage under detonation from power adders like NOS or boost.