Hastings
Hastings Piston Ring Set - 2M5721 For Harley Motorcycles 1948-1985
MPN:
2M5721
SKU:
DS-750861
Hastings
Hastings Piston Ring Set - 2M5721 For Harley Motorcycles 1948-1985
MPN:
2M5721
SKU:
DS-750861
Availability:
17 in stock, ready to be shipped
Includes top compression rings, second compression rings, and oil control rings
Top Compression Rings are Barrel Face
Helps in the the heat transfer process between the piston and cylinder wall
Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft
Second Compression Ring are Reverse Torsional Taper Face
Promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy
Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring
Oil Control Rings are Three Piece Flex Vent
Three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore
Provides uniform pressure through four steel rails and two expanders assuring positive oil control
Made in the USA
Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
Includes enough rings for two pistons (unless noted).
Two rings per groove, except for the rails that will be two rail rings per one expander ring.
Specs
Bore - Oversize
Standard
Bore Oversize
Standard
Product Name
Piston Ring Set
Ring Material
Moly Coated
Units
Set
Riding Style
Street
Bore Size
3.625"
Style
Replacement
Part Notes
Set for one piston only.
Kit Includes:
• 1x Top Compression Rings 0.0625"
• 1x Second Compression Rings 0.0625"
• 1x Expander Rings 0.1875"
• 2x Steel Rails
Original price
$39.95
-
Original price
$39.95
Original price
$39.95
$39.95
-
$39.95
Current price
$39.95
Product Details
Features
- Includes top compression rings, second compression rings, and oil control rings
- Top Compression Rings are Barrel Face
- Helps in the the heat transfer process between the piston and cylinder wall
- Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft
- Second Compression Ring are Reverse Torsional Taper Face
- Promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy
- Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring
- Oil Control Rings are Three Piece Flex Vent
- Three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore
- Provides uniform pressure through four steel rails and two expanders assuring positive oil control
- Made in the USA
- Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
- Includes enough rings for two pistons (unless noted).
- Two rings per groove, except for the rails that will be two rail rings per one expander ring.
Specs
| Bore - Oversize | Standard |
| Bore Oversize | Standard |
| Product Name | Piston Ring Set |
| Ring Material | Moly Coated |
| Units | Set |
| Riding Style | Street |
| Bore Size | 3.625" |
| Style | Replacement |
Part Notes
- Set for one piston only.
- Kit Includes:
- • 1x Top Compression Rings 0.0625"
- • 1x Second Compression Rings 0.0625"
- • 1x Expander Rings 0.1875"
- • 2x Steel Rails
Features
- Includes top compression rings, second compression rings, and oil control rings
- Top Compression Rings are Barrel Face
- Helps in the the heat transfer process between the piston and cylinder wall
- Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft
- Second Compression Ring are Reverse Torsional Taper Face
- Promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy
- Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring
- Oil Control Rings are Three Piece Flex Vent
- Three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore
- Provides uniform pressure through four steel rails and two expanders assuring positive oil control
- Made in the USA
- Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
- Includes enough rings for two pistons (unless noted).
- Two rings per groove, except for the rails that will be two rail rings per one expander ring.
Specs
| Bore - Oversize | Standard |
| Bore Oversize | Standard |
| Product Name | Piston Ring Set |
| Ring Material | Moly Coated |
| Units | Set |
| Riding Style | Street |
| Bore Size | 3.625" |
| Style | Replacement |
Part Notes
- Set for one piston only.
- Kit Includes:
- • 1x Top Compression Rings 0.0625"
- • 1x Second Compression Rings 0.0625"
- • 1x Expander Rings 0.1875"
- • 2x Steel Rails
| Store SKU | MFR. Product # | Availability |
|---|---|---|
| DS-750861 | 2M5721 | In Stock |
This product is vehicle specific.
Select your vehicle to confirm fitment.
This Product Fits
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
Product Description
Features
- Includes top compression rings, second compression rings, and oil control rings
- Top Compression Rings are Barrel Face
- Helps in the the heat transfer process between the piston and cylinder wall
- Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft
- Second Compression Ring are Reverse Torsional Taper Face
- Promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy
- Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring
- Oil Control Rings are Three Piece Flex Vent
- Three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore
- Provides uniform pressure through four steel rails and two expanders assuring positive oil control
- Made in the USA
- Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
- Includes enough rings for two pistons (unless noted).
- Two rings per groove, except for the rails that will be two rail rings per one expander ring.
Specs
| Bore - Oversize | Standard |
| Bore Oversize | Standard |
| Product Name | Piston Ring Set |
| Ring Material | Moly Coated |
| Units | Set |
| Riding Style | Street |
| Bore Size | 3.625" |
| Style | Replacement |
Part Notes
- Set for one piston only.
- Kit Includes:
- • 1x Top Compression Rings 0.0625"
- • 1x Second Compression Rings 0.0625"
- • 1x Expander Rings 0.1875"
- • 2x Steel Rails
Part Numbers
| Store SKU | MFR. Product # | Availability |
|---|---|---|
| DS-750861 | 2M5721 | In Stock |
Fitment
This product is vehicle specific.
Select your vehicle to confirm fitment.
This Product Fits
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.