Hastings Mfg Moly Oversized .010 Piston Rings - Harley Milwaukee-Eight Touring & Softail
About Hastings Mfg
Hastings has manufactured piston rings in the United States since 1915, supplying both the automotive and powersports rebuild markets. Rings are one of the few parts where a rebuild genuinely should not be cheapened.
When you're building out a Milwaukee-Eight, the piston rings are critical for maintaining compression and controlling oil. Hastings Mfg offers moly-faced piston rings for a durable, low-friction seal that stands up to the demands of performance V-twin engines. This set is designed for .010 oversized bores.
Why riders pick this
- Moly face coating for reduced friction and extended life
- Three-piece oil ring design for superior oil control
- Engineered for .010 oversized Milwaukee-Eight bores
- Compatible with OEM and Screaming Eagle pistons
- Made in the USA
These Hastings Mfg piston rings are engineered for Milwaukee-Eight V-twin engines, providing a robust sealing solution for your top end. The moly face coating on the compression rings helps reduce friction and wear, ensuring a longer lifespan and consistent performance. With a three-piece oil ring design, you get excellent oil control, which is crucial for preventing blow-by and maintaining engine health.
Reliable Sealing for Your M8
- Moly face coating on compression rings for reduced friction and wear
- Three-piece oil ring design ensures superior oil control
- Compatible with both OEM and Screaming Eagle pistons
- Manufactured in the USA for quality you can trust
Building a Performance Milwaukee-Eight
Whether you're doing a routine rebuild or pushing the limits with a performance build, these piston rings are a solid choice. They integrate seamlessly with existing OEM and Screaming Eagle pistons, simplifying your build process. Confirm bore sizing carefully before ordering to ensure a perfect fit for your Milwaukee-Eight Touring or Softail model.
Specifications
- Brand: Hastings Mfg
- Manufacturer Part #: 2C5231.25
- Length: 5 in
- Width: 1.37 in
- Height: 5 in
- Weight: 0.21 lbs
Common questions
What's the benefit of moly-coated piston rings?
Moly (molybdenum) coatings reduce friction between the ring and cylinder wall, which can lead to better wear resistance and a longer lifespan for your engine components.
How many pistons does this set cover?
This set is designed to cover two pistons. If you are working on a Twin Cam 113" or Sportster 883 XL, you will need to order two sets as those applications are sold per cylinder.
Will these rings work with my aftermarket pistons?
These rings are compatible with both OEM and Screaming Eagle pistons. Always verify that the ring groove diameter of your specific piston matches these rings before installation.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Hastings Mfg |
| TYPE | Piston kits & Components |
| SKU | 865-2042 |
| WEIGHT | 0.21 lb |
