Kb Pistons Forged Alloy Piston - Pistons 883 TO 1200 10.5:1 .020 — Harley-Davidson Sportster 883, Sportster 883 Hugger, Super Low (1986-2019)

KB Pistons forged alloy piston set for Harley Sportster 883-to-1200cc conversions, featuring 4032 forged alloy with 11% silicon content for superior crack resistance under detonation. Built for street or race applications with power adders like NOS or boost.

Features

• 4032 forged alloy with 11% silicon content
• Superior crack resistance under detonation or 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 #: KB925C.020
• UPC: 800745154378
• Compression Ratio: 10.5:1
• Oversized: .020 in
• Length: 9.5 in
• Width: 4.8 in
• Height: 4.6 in
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

For Harley Sportster 883-to-1200cc displacement conversions in street or race applications with power adders such as NOS or boost.

Frequently Asked Questions

What's included with the piston kit?

Two pistons, all rings, wrist pins, and wrist pin locks (2 locks per piston). Everything needed to complete the set.

Can I use these for a stock or mildly modified engine?

These pistons are engineered for high-output applications with power adders. For stock or mild builds, consult KB Pistons on a more conservative option.

Are replacement rings available separately?

Yes, replacement rings are available but special order. Contact KB Pistons or your dealer for ring part numbers.

Do these require machine work or honing?

Your engine block will need to be bored .020 in oversize and properly honed to accept these pistons. Professional machine work is required.

Why are wrist pin locks sold individually?

Each piston requires 2 wrist pin locks. Since pistons come in pairs, you'll need to order 4 locks total (2 sets of 2) for a complete installation.