Kb Pistons Forged Alloy Piston - Pistons Tc88 TO 95ci 9.25:1 .010 — Harley-Davidson Road King, Road King Classic, Electra Glide (1999-2007)

KB Pistons forged alloy piston for Twin Cam 88 to 95ci engines with 9.25:1 compression ratio and .010 oversized bore. Built from 4032 forged alloy with 11% silicon content for superior crack resistance under detonation, making it suitable 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 applications
• Sold as a pair with rings, wrist pins, and locks included
• Replacement rings available as special order

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB904C.010
• UPC: 800745152404
• Compression Ratio: 9.25:1
• Bore Size: .010 oversized
• Engine Displacement: Twin Cam 88 to 95ci
• Length: 5.9 in
• Width: 5.8 in
• Height: 5.7 in
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Fits Twin Cam 88 to 95ci engines at 9.25:1 compression ratio and .010 oversized bore. Designed for street or race applications with power adders such as NOS or boost.

Frequently Asked Questions

What comes in the box?

One pair of pistons with rings, wrist pins, and wrist pin locks included. You will need 2 locks per piston (4 total per pair).

Are replacement rings available?

Yes, replacement rings are available as a special order from KB Pistons.

Will these pistons handle forced induction?

Yes — the 4032 forged alloy with 11% silicon content is engineered for detonation resistance, making them suitable for boost and NOS applications.

Do I need to order wrist pins separately?

No — wrist pins and locks are included with the piston pair. You do not need to order them separately.