STONE 144BCD Round Narrow-Wide Chainring for Track & Fixed Gear Bikes: 44T–70T, 7075-T651 Aluminum, 9–12 Speed Compatible
The STONE 144BCD round narrow-wide chainring is designed for track bikes, fixed gear bikes, and 1x drivetrain setups that use a standard 144BCD crankset.
Machined from high-strength 7075-T651 aluminum alloy, it pairs precision CNC construction with an anodized surface and a narrow-wide tooth profile for improved chain retention.
Available in a wide range of sizes from 44T to 70T, it delivers smooth power transfer and dependable, long-lasting performance.
Product Specifications
| Item | Specification |
|---|---|
| Product Name | STONE 144BCD Round Narrow Wide Chainring |
| BCD | 144BCD |
| Chainring Type | Round |
| Tooth Profile | Narrow Wide |
| Material | 7075-T651 High-Strength Aluminum Alloy |
| Material Hardness | HB150 |
| Thickness | 4 mm |
| CNC Precision | 0.03 mm |
| Surface Treatment | Anodized, High-Speed CNC Machined |
| Color | Black |
| Drivetrain Type | Single-speed / 1x drivetrain |
| Teeth Options | 44T / 46T / 48T / 50T / 52T / 54T / 55T / 56T / 58T / 60T / 62T / 64T / 66T / 68T / 70T |
Important Compatibility Notice
This chainring is designed for single-speed / 1x drivetrain systems only. It is not compatible with 2x drivetrains and does not support front shifting.
Please do not use this chainring with:
- Front derailleur
- Front shifter
- 2x drivetrain setup
- Double-chainring configuration
Please confirm your crankset is 144BCD before placing an order.
Fitment
This chainring fits:
- 144BCD cranksets
- Track bike cranksets
- Fixed gear cranksets
- Single-speed / 1x drivetrain cranksets with 144BCD mounting
Please note: this chainring only fits cranksets with a 144BCD bolt circle diameter.
Chain Compatibility
| Chain Type | Compatibility |
|---|---|
| MTB 9 / 10 / 11 / 12-speed chains | Compatible |
| SRAM road 9 / 10 / 11-speed chains | Compatible |
| Shimano road 9 / 10 / 11 / 12-speed chains | Compatible |
| SRAM AXS 12-speed Flattop chain | Not compatible with standard version |
SRAM AXS Flattop Chain Notice
The standard version does not support SRAM AXS 12-speed Flattop chains.
If you need a tooth profile compatible with SRAM AXS 12-speed Flattop chains, please contact us before ordering.
Material & Manufacturing Advantages
1. High-Strength 7075-T651 Aluminum Alloy
This chainring is made from 7075-T651 aluminum alloy, known for excellent strength, stiffness, and durability.
The raw aluminum material is supplied by Aleris, a USA aluminum supplier serving aerospace manufacturers such as Airbus, Boeing, and Bombardier.
2. High-Precision CNC Machining
Each chainring is produced by high-speed CNC machining with 0.03 mm processing precision. This helps ensure:
- Accurate tooth profile
- Smooth chain engagement
- Stable drivetrain performance
- Reliable power transfer
3. Narrow-Wide Tooth Design
The narrow-wide tooth profile helps keep the chain securely engaged, especially for 1x drivetrain setups. This design can reduce the chance of chain drop and improve riding stability.
Package Includes
- 1 × Chainring
- 5 × Steel Chainring Bolts
