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.
For riders building or rebuilding a Milwaukee-Eight engine, precise piston rings are non-negotiable for power and durability. Hastings Mfg offers moly-coated piston rings for .010 oversized bores, engineered for optimal sealing and oil control. These rings are proudly made in the USA.
Why riders pick this
- Moly material for durability and reduced friction
- Three-piece oil ring design for optimal oil control
- Designed for .010 oversized Milwaukee-Eight engines
- Works with OEM and Screaming Eagle pistons
- Made in the USA
These Hastings Mfg piston rings are specifically designed for Milwaukee-Eight V-twin engines requiring an .010 oversized fit. The moly material on the compression rings is chosen for its ability to reduce friction and minimize wear, ensuring a long-lasting and effective seal against the cylinder walls. This leads to more consistent compression and improved overall engine efficiency. The advanced three-piece oil ring design provides superior oil control, preventing blow-by and contributing to a cleaner, healthier engine.
Engineered for M8 Performance Builds
- Moly material for enhanced durability and reduced friction
- Three-piece oil ring design for superior oil control
- Designed for .010 oversized Milwaukee-Eight cylinders
- Compatible with OEM and Screaming Eagle pistons
- Manufactured with pride in the USA
The Foundation of a Strong M8 Engine
When you're pushing your Milwaukee-Eight, every component matters. These oversized piston rings from Hastings Mfg provide the foundation for a strong, reliable top end. Their compatibility with both OEM and Screaming Eagle pistons offers flexibility for various build specifications. Always confirm your cylinder bore measurements to ensure the correct fitment for your Harley Touring, Softail, or Dyna model.
Specifications
- Brand: Hastings Mfg
- Manufacturer Part #: 2C5232.25
- Length: 5 in
- Width: 1.37 in
- Height: 5 in
- Weight: 0.23 lbs
Common questions
How many piston rings are included in one set?
One set includes a complete three-piece ring package designed for two pistons. However, for Twin Cam 113" and Sportster 883 XL models, rings are sold per cylinder, so you would need to order two sets for one bike.
Are these piston rings compatible with Screaming Eagle pistons?
Yes, Hastings Mfg piston rings are specifically engineered to work effectively with both OEM (Original Equipment Manufacturer) and Screaming Eagle aftermarket pistons.
What is the main benefit of moly-coated rings?
Moly (molybdenum) coatings reduce friction between the piston ring and the cylinder wall. This leads to better wear resistance, improved sealing, and often a quicker break-in period for the engine.
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 | 865-2045 |
| WEIGHT | 0.23 lb |
