Hastings Mfg Moly Oversized .005 Piston Rings - Harley Twin Cam 1584 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 performing a top-end overhaul on your Twin Cam 1584, selecting the right piston rings is crucial for performance and durability. Hastings Mfg offers moly-coated piston rings in an .005 oversized fit, engineered for superior sealing and oil control. These rings are proudly manufactured in the USA.
Why riders pick this
- Moly construction for durability and reduced friction
- Three-piece oil ring design for optimal oil control
- Designed for .005 oversized Twin Cam 1584 engines
- Works with OEM and Screaming Eagle pistons
- Made in the USA
These Hastings Mfg piston rings are specifically designed for Twin Cam 1584cc engines requiring an .005 oversized fit. The moly construction on the compression rings is key to reducing friction and minimizing wear, ensuring a long-lasting and effective seal against the cylinder walls. This directly contributes to consistent compression and improved engine efficiency. The robust three-piece oil ring design provides excellent oil control, preventing blow-by and helping to keep your engine's combustion chambers clean and efficient.
Reliable Sealing for Twin Cam Builds
- Moly construction for enhanced durability and reduced friction
- Three-piece oil ring design ensures superior oil control
- Engineered for .005 oversized Twin Cam 1584 cylinders
- Compatible with OEM and Screaming Eagle pistons
- Made in the USA for trusted quality
The Foundation of a Solid Twin Cam Engine
Choosing the correct piston rings is a critical step in any Twin Cam 1584 engine build, especially when working with oversized bores. These Hastings Mfg rings are a direct fit for both OEM and Screaming Eagle pistons, offering versatility for your project. Always verify your cylinder bore measurements to ensure proper fitment and performance for your Harley Touring, Softail, or Dyna model.
Specifications
- Brand: Hastings Mfg
- Manufacturer Part #: 2M4805005
- Oversized: .005 OS
- Engine: Twin Cam 1584
- Material: Moly
- Length: 5 in
- Width: 1.37 in
- Height: 5 in
- Weight: 0.22 lbs
Common questions
Are these piston rings compatible with Screaming Eagle pistons?
Yes, Hastings Mfg piston rings are designed to work seamlessly with both OEM (Original Equipment Manufacturer) and Screaming Eagle aftermarket pistons.
How many sets do I need for my Twin Cam 1584?
For most Twin Cam 1584 models, one set of these rings covers 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 per bike.
What is the benefit of using moly rings for my engine?
Moly (molybdenum) rings offer a lower friction surface, which contributes to better wear resistance, improved sealing, and often a quicker and more effective break-in process for your 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 | 865-2047 |
| WEIGHT | 0.22 lb |
