Hastings Mfg Moly Standard Size 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 it's time for a top-end refresh on your Twin Cam 1584 engine, precise piston rings are essential for restoring compression and oil control. Hastings Mfg offers moly-coated piston rings in standard size, engineered for durability and reliable sealing. These rings are proudly manufactured in the USA.
Why riders pick this
- Moly-coated for reduced friction and extended wear life
- Three-piece oil ring design for optimal oil control
- Direct fit for standard size 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 1584 engines, offering a direct fit for standard bore cylinders. The moly coating on the compression rings significantly reduces friction and wear, promoting a longer engine life and more consistent performance. This material choice is crucial for maintaining a tight seal against the cylinder walls, which directly impacts horsepower and torque. The three-piece oil ring design ensures excellent oil control, preventing blow-by and keeping your combustion chambers clean.
Engineered for Twin Cam Durability
- Moly-coated rings for reduced wear and improved sealing
- Three-piece oil ring design for effective oil control
- Designed for standard size Twin Cam 1584 engines
- Compatible with OEM and Screaming Eagle pistons
- Made in the USA for superior quality
Rebuilding Your Twin Cam Top End
Whether you're performing a routine rebuild or chasing performance gains, these standard size piston rings are a critical component for your Twin Cam 1584. Their compatibility with both OEM and Screaming Eagle pistons provides flexibility for various setups. Always confirm your cylinder bore measurements before installation to ensure perfect fitment and optimal performance for your Harley Touring, Softail, or Dyna model.
Specifications
- Brand: Hastings Mfg
- Manufacturer Part #: 2M4805
- Ring Type: Moly
- Engine: Twin CAM 1584
- Size: Standard
- Length: 5 in
- Width: 1.37 in
- Height: 5 in
- Weight: 0.22 lbs
Common questions
How many pistons does one set of these rings cover?
One set of these Hastings Mfg piston rings is designed to cover 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.
Are these piston rings compatible with Screaming Eagle pistons?
Yes, these Hastings Mfg piston rings are specifically designed to work seamlessly with both OEM (Original Equipment Manufacturer) and Screaming Eagle aftermarket pistons.
What is the main difference between Cast and Moly piston rings?
Moly-faced rings, like these, incorporate a molybdenum coating that provides a lower friction surface, leading to better wear resistance and a faster break-in period compared to traditional cast iron rings.
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 | 865-2046 |
| WEIGHT | 0.22 lb |
