Kb Pistons Super Duty Piston - BIG Bore TC 96 TO 103 10:1 STD — Harley-Davidson Road King, Electra Glide Ultra Classic, Street Glide (2007-2017)

KB Pistons Super Duty piston set for big-bore Twin Cam 96 to 103 engines at 10:1 compression ratio, standard bore. Engineered for Harley-Davidson cruisers with forced wrist pin oiling, anodized crown, and a specialized skirt coating that seats itself for quiet, tight running clearance.

Features

• Anodized top ring groove and crown
• Line2Line Abradable skirt coating (.003" total thickness) with ZERO initial fit for self-honing clearance
• Round wire wrist pin locks
• Premium Hastels 1.2mm top ring with Steel Nitride finish and Ductile Napier second ring
• Forced wrist pin oiling
• Flat-top piston with 1.2cc dish and 1.083" compression height
• Valve pockets sized for 1mm oversize valves
• Sold as a complete pair with all rings and wrist pin hardware included

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB660LCA.STD
• UPC: 800745243379
• Engine Application: Twin Cam 96 to 103 (10:1 compression, standard bore)
• Compression Ratio: 10:1
• Top Piston Design: Flat-top, 1.2cc dish, 1.083" compression height
• Quantity: Pair (2 pistons)
• Includes: Pistons, rings, wrist pins, and locks
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Fits Harley-Davidson V-twin motorcycles with Twin Cam 96 to 103 engines at 10:1 compression ratio in standard bore.

Frequently Asked Questions

What's included in this piston kit?

Two complete pistons, premium Hastings rings (top and second), wrist pins, and round wire locks — everything needed for a piston replacement.

Will these fit my 96 ci Twin Cam engine?

Yes. These pistons are engineered for Twin Cam 96 to 103 ci engines at 10:1 compression ratio in standard bore.

What does the Line2Line Abradable skirt coating do?

The .003" coating starts with ZERO initial clearance and self-hones during break-in to create a tight, quiet running fit without requiring machine work.

Do I need an oversize valve job to use these?

These pistons ship with valve pockets sized for 1mm oversize valves, but you can use them with stock valves as well.

Is forced wrist pin oiling important?

Yes — forced oiling to the wrist pin reduces friction and wear in high-output engines, extending piston and pin life.