Hastings Mfg Piston Rings - Twin CAM 1690 OS .010 Moly — Harley-Davidson Road King, Electra Glide Ultra Classic, Softail Heritage Classic (1999-2017)

Hastings Mfg piston rings for Twin CAM 1690 engines in .010 oversized Moly compound. These three-piece oil rings are engineered to work with OEM and Screaming Eagle pistons and manufactured in the USA.

Features

• Moly compound construction
• Three-piece oil ring design
• Works 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 #: 2M4941010
• Material: Moly
• Oversizing: .010 in
• Length: 5 in
• Width: 1.37 in
• Height: 5 in
• Weight: 0.24 lbs

Fitment

Designed for Twin CAM 1690 V-twin engines. Note: TC 113" and 883 XL rings are sold per cylinder — you must order two sets per bike.

Frequently Asked Questions

How many rings come in a set?

One set covers two pistons for most applications. TC 113" and 883 XL require two sets per bike (one per cylinder).

Will these work with my Screaming Eagle pistons?

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

Are these Moly or Cast?

This part number is Moly compound. Hastings also offers Cast versions under a different part number.

Do I need to order two sets for my TC 113" or 883 XL?

Yes — TC 113" and 883 XL rings are per-cylinder. Order two complete sets for a full rebuild.