Upgrade your ride with the HASTINGS RINGS M8 107″ 3.937 +005 from Knobtown Cycle, Kansas City’s premier motorcycle parts destination.
Product Description
RINGS M8 107" 3.937 +005
- Includes top compression rings, second compression rings, and oil control rings
- Top compression rings are Barrel Face
- Coated using PVD (Physical Vapor Deposition) process
- 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 rings are Napier
- Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring
- Promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy
- 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
- Includes enough rings for two pistons.
- Two rings per groove, except for the rails that will be two rail rings per one expander ring.
Part Locations
| Location |
Available |
| Wisconsin (WI) |
1 |
| New York (NY) |
1 |
| Texas (TX) |
0 |
| Nevada (NV) |
6 |
| North Carolina (NC) |
0 |
| National Total |
8 |
Stock levels last updated: December 22, 2025 1:43 PM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
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