Kb Pistons Super Duty Piston - BIG Bore TC 96/103 TO 117 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 and M8 V-twin engines, upgraded from 96ci to 117ci displacement with a 10:1 compression ratio. Includes rings, wrist pins, and locks—sold as a pair ready for installation.

Features

• Anodized top ring groove and crown
• Line2Line Abradable skirt coating for zero initial clearance and quiet operation
• Round wire wrist pin locks
• Premium Hastings 1.2mm x 1.2mm x 3.0mm Steel Nitride top ring with Ductile Napier second ring
• Forced wrist pin oiling
• Flat-top design with 1.2cc dish and 1.083" compression height
• Valve pockets sized for 1mm oversize valves
• All rings, wrist pins, and locks included

Specifications

• Brand: KB Pistons
• Manufacturer Part #: KB662LCA.STD
• UPC: 800745248107
• Compression Ratio: 10:1
• Displacement Range: 96ci to 117ci big-bore
• Length: 6 in
• Width: 5 in
• Height: 5 in
• Weight: 2.5 lbs
• Country of Origin: Mexico

Fitment

Designed for big-bore Twin Cam 96ci and 103ci platforms bored and stroked to 117ci displacement, and compatible with M8 engine builds. Verify your engine displacement and bore size before ordering.

Frequently Asked Questions

What comes in the box?

A pair of pistons with all rings, wrist pins, and wire locks pre-installed and ready for assembly into your cylinder.

Do I need to hone the cylinders after installation?

The Line2Line Abradable skirt coating is designed to hone itself during break-in for a tight, quiet fit. Proper honing of cylinders to size is still required before installation.

Is this suitable for stock Harley or Indian engines?

No — this is a big-bore upgrade piston for 117ci displacement. Stock engines use smaller pistons. Only install in bored-and-stroked or aftermarket big-bore blocks.

Will these work with stock rings and wrist pins?

No — use only the premium rings, wrist pins, and locks included with these pistons for proper fitment and durability.

What compression ratio do these provide?

10:1 compression ratio. Ensure your fuel octane rating and tune support this ratio to avoid detonation.