Wiseco Black Edition Piston Kit - TC 103 CID 10.5:1 — Harley-Davidson Road King, Electra Glide Ultra Classic, Tri Glide Ultra Classic (2009-2017)

Wiseco Black Edition piston kit for 103 CID Twin Cam engines with 10.5:1 compression ratio. Features premium ring design and dual protective coatings for reduced wear, friction, and noise while maintaining OEM compatibility with stock and Screamin' Eagle cylinder heads.

Features

• Premium compression ring for ultimate ring seal
• Napier second ring with taper face and underhook for improved oil control
• 3mm oil ring design with higher tension for enhanced oil control
• Armor X piston coating reduces wear
• ArmorGlide skirt coating reduces friction and improves scuff resistance
• Compatible with OEM and Screamin' Eagle cylinder heads

Specifications

• Brand: Wiseco
• Manufacturer Part #: K2792
• Engine Displacement: 103 CID
• Compression Ratio: 10.5:1
• Length: 9 in
• Width: 4 in
• Height: 4 in
• Weight: 2.4 lbs

Fitment

Fits Twin Cam 103 CID V-twin engines in Harley-Davidson and Indian Motorcycle applications.

Frequently Asked Questions

Will these pistons work with my stock cylinder heads?

Yes — Wiseco Black Edition K2792 is compatible with OEM Harley-Davidson and Indian Motorcycle cylinder heads.

Can I use these with Screamin' Eagle heads?

Yes. These pistons are engineered to work with both stock and Screamin' Eagle aftermarket heads.

What compression ratio do these pistons deliver?

10.5:1 compression ratio — a moderate boost over stock for improved performance without requiring premium fuel on most TC 103 builds.

Why are there two different ring types?

The Napier second ring with underhook provides superior oil control, while the premium compression ring maximizes seal integrity under high combustion pressures.

Do I need to re-jet my carburetor?

Ring compression and oil control improvements typically do not require rejetting, but fuel mapping may benefit other modifications like intake or exhaust work.