Hastings Mfg Piston Rings - Twin CAM 1753/ 1917 OS .005 Moly — Harley-Davidson (1999-2017)

Hastings Mfg piston rings for Twin CAM and big-bore V-twin engines, available in cast or moly construction with three-piece oil rings for durability and seal integrity. Made in the USA and compatible with OEM and Screaming Eagle pistons.

Features

• Available in Cast or Moly compound
• Three-piece oil rings
• Compatible with OEM and Screaming Eagle pistons
• Made in the USA
• Sold in sets for two pistons (except TC 113" and 883 XL)

Specifications

• Brand: Hastings Mfg
• Manufacturer Part #: 2M5157005
• Length: 5 in
• Width: 1.37 in
• Height: 5 in
• Weight: 0.25 lbs

Fitment

Fits V-twin motorcycles including Twin CAM engines. Standard sets cover two pistons, but TC 113" and 883 XL require per-cylinder ordering — you must order two sets per bike for these models.

Frequently Asked Questions

How many piston rings are in a set?

One complete set covers two pistons. TC 113" and 883 XL riders need two sets per bike since those models require per-cylinder ordering.

What's the difference between Cast and Moly rings?

Moly rings offer enhanced durability and heat resistance compared to cast, especially in high-horsepower or frequently-ridden engines.

Will these work with Screaming Eagle pistons?

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

Do I need to order two sets if I have a TC 113" or 883 XL?

Yes. TC 113" and 883 XL rings are sold per cylinder, so you must order two sets for a complete engine rebuild.