Kb Pistons Super Duty Piston - BIG Bore TC 96/103 TO 110 10:1 STD — Harley-Davidson Road King, Electra Glide Ultra Classic, Street Glide (2007-2017)

KB Pistons Super Duty piston pair for big-bore Twin Cam 96/103 to 110cc builds, featuring a flat-top 10:1 design with forced wrist pin oiling and Line2Line Abradable skirt coating for zero initial clearance. Includes premium Hastels rings, wrist pins, and locks—ready to drop into your stroker build.

Features

• Anodized top ring groove and crown
• Line2Line Abradable skirt coating (.003" thickness) for tight, quiet running clearance
• Forced wrist pin oiling for reliability
• Premium Hastings 1.2mm×1.2mm×3.0mm Steel Nitride top ring with Ductile Napier second ring
• Flat-top design with 1.2cc dish and 1.083" compression height
• Valve pockets sized for 1mm oversize valves
• Round wire wrist pin locks
• Sold as a pair with all rings and pins included

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB661LCA.STD
• UPC: 800745243423
• Application: Twin Cam 96/103 to 110cc big-bore
• Compression Ratio: 10:1
• Top Design: Flat-top, 1.2cc
• Compression Height: 1.083 in
• Weight: 2.5 lbs (pair)
• Country of Origin: Mexico

Fitment

Fits V-twin motorcycle big-bore builds using Twin Cam 96/103 to 110cc displacement upgrades.

Frequently Asked Questions

Do I get rings and wrist pins with these pistons?

Yes — all Hastings rings, wrist pins, and wire locks are included in the pair. Ready to assemble.

What is the Line2Line Abradable skirt coating?

A .003" thick coating that provides zero initial clearance, then wears in during break-in to achieve tight, quiet running clearance without knocking.

Can these handle 110cc displacement on a 96-cubic-inch block?

Yes — these pistons are engineered for big-bore builds from 96cc up to 110cc with the proper bore machine work and stroker kit.

Are these pistons street legal?

These are OEM-specification components suitable for street and performance use. Ensure your entire build complies with local emissions and noise regulations.