Hastings Mfg Piston Rings - M8 1868 STD Size Moly — Harley-Davidson Street Glide, Softail Fat Boy 114, Road King Special (2017-2026)

Hastings Mfg piston rings for Milwaukee-Eight engines in standard bore size, featuring moly-faced compression rings and three-piece oil control rings. Direct fit for OEM and Screaming Eagle pistons, made in the USA.

Features

• Moly-faced compression rings
• Three-piece oil control rings
• Compatible with OEM and Screaming Eagle pistons
• Standard bore size
• Made in the USA

Specifications

• Brand: Hastings Mfg
• Manufacturer Part #: 2C5232
• Engine: Milwaukee-Eight (M8)
• Ring Type: Moly
• Bore Size: Standard
• Length: 5 in
• Width: 1.37 in
• Height: 5 in
• Weight: 0.21 lbs

Fitment

Fits Milwaukee-Eight (M8) V-twin engines. Each set covers two pistons. Note: Twin Cam 113" and 883 XL require two sets per bike (sold per cylinder).

Frequently Asked Questions

How many pistons does one set cover?

One set covers two pistons, except Twin Cam 113" and 883 XL which are sold per cylinder — order two sets for those engines.

Will these work with Screaming Eagle pistons?

Yes — these rings are designed to work with both OEM and Screaming Eagle pistons.

What's the difference between Cast and Moly rings?

Moly-faced rings (this part) offer better wear resistance and are preferred for high-performance or rebuilt engines. Cast rings are the economy option.

Do I need special tools to install these?

Piston ring installation requires a ring compressor tool and proper piston-to-ring clearance checking — not a beginner job.