Hastings Mfg Piston Rings - Twin CAM 1852 OS .010 Moly — Harley-Davidson Road King, Electra Glide Ultra Classic, Softail Heritage Classic (1999-2017)

Hastings Mfg piston rings for Twin CAM engines in .010 OS Moly compound, designed to seal combustion pressure and control oil consumption in V-twin motorcycle engines. Set includes three-piece oil rings compatible with OEM and Screaming Eagle pistons, made in the USA.

Features

• Moly face coating for reduced friction and wear
• Three-piece oil ring design
• Compatible with OEM and Screaming Eagle pistons
• Made in the USA
• Set covers two pistons (except TC 113" and 883 XL — see fitment

Specifications

• Brand: Hastings Mfg
• Manufacturer Part #: 2M5153010
• Oversizing: .010 inch
• Compound: Moly
• Length: 5 in
• Width: 1.37 in
• Height: 5 in
• Weight: 0.17 lbs

Fitment

Fits Twin CAM V-twin engines. IMPORTANT: TC 113" and 883 XL models require two sets per bike, as this part is sold per-cylinder for those models only. All other Twin CAM engines receive a two-piston set.

Frequently Asked Questions

How many ring sets do I need for my Twin CAM?

Most Twin CAM models need one set (covers two pistons). TC 113" and 883 XL require two sets — one per cylinder. Verify your engine size before ordering.

Will these fit my Screaming Eagle pistons?

Yes — these rings are engineered to work with both OEM and Screaming Eagle piston designs.

What's the difference between Cast and Moly?

Moly-faced rings (this part) reduce friction and wear compared to cast rings, extending ring life and improving engine efficiency.

Are these made in the USA?

Yes — Hastings Mfg manufactures these rings domestically.