Kb Pistons Forged Alloy Piston - Pistons Tc96 TO 103ci 9.5:1 .005 — Harley-Davidson (2007-2017)

KB Pistons forged 4032 alloy pistons for Twin Cam and Sportster engines, sized for 96–103 ci displacement with 9.5:1 compression ratio and .005 inch oversized bore. Built from 4032 alloy with 11% silicon content for superior crack resistance under detonation or pre-ignition, ideal for street and race applications running power adders like NOS or boost.

Features

• 4032 forged alloy with 11% silicon content
• Forged and fully machined construction
• 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 #: KB907C.005
• UPC: 800745153142
• Compression Ratio: 9.5:1
• Oversized Bore: .005 inch
• Alloy: 4032 forged with 11% silicon
• Weight: 2.6 lbs
• Country of Origin: Mexico

Fitment

Fits Twin Cam and Sportster engines in 96–103 cubic inch displacement. Designed for street and race applications with power adders such as NOS or boost.

Frequently Asked Questions

What's included with these pistons?

The pair of pistons, piston rings, wrist pins, and wrist pin locks — everything needed for installation.

Do I need two wrist pin locks per piston?

Yes — you will need to order 2 locks per piston (4 total for the pair). They are sold individually.

Are these suitable for supercharger or turbo applications?

Yes — the 4032 forged alloy and manufacturing process provide the crack resistance needed for forced-induction power adders.

Can I order replacement rings separately?

Replacement rings are available but must be ordered as a special order from KB Pistons.

Will these fit my Sportster?

Yes — these pistons fit Sportster engines in the 96–103 ci range with a 9.5:1 compression ratio. Verify your engine displacement and compression needs before ordering.