Wiseco Black Edition Piston Kit - M8 114cid 11.0:1 — Harley-Davidson Street Glide, Softail Fat Boy 114, Road King Special (2017-2026)

Wiseco Black Edition piston kit for Harley M8 114cid big-bore engines at 11.0:1 compression. Features Armor X coating and ArmorGlide skirt treatment for durability and reduced friction, compatible with OEM 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
• Armor X piston coating reduces wear
• ArmorGlide skirt coating reduces friction and improves scuff resistance
• Compatible with OEM and Screamin' Eagle heads

Specifications

• Brand: Wiseco
• Manufacturer Part #: K2785
• Compression Ratio: 11.0:1
• Displacement: 114 cubic inches
• Length: 9.5 in
• Width: 4.87 in
• Height: 4 in
• Weight: 2.77 lbs
• Country of Origin: United States of America

Fitment

Fits Harley-Davidson Milwaukee-Eight (M8) engines with 114 cubic inch displacement.

Frequently Asked Questions

Will this work with my OEM Harley heads?

Yes — this kit is designed to work with both factory Harley heads and Screamin' Eagle performance heads.

What compression ratio is this?

11.0:1 compression, suitable for premium fuel and performance riding.

Is installation something I can do myself?

Piston installation requires engine disassembly and precise measurement. Most riders have a professional shop handle this job.

What's included in the kit?

Pistons, rings, and wrist pins — everything needed to complete a piston replacement on one engine.

Will this give me more horsepower?

Higher compression improves combustion efficiency, but actual power gains depend on your fuel quality, tuning, and other engine mods.