STONE 146BCD Narrow Wide Chainring for Shimano XTR M960 4-Arm Crankset, 44–50T, 1x 8–12 Speed
The STONE 146BCD narrow-wide chainring is designed specifically for Shimano XTR M960 4-arm cranksets, making it an ideal upgrade for riders converting to a 1x drivetrain.
The narrow-wide tooth profile alternates tooth widths to grip the chain more securely, improving chain retention and greatly reducing the risk of chain drop on rough terrain.
Constructed from 7075-T651 high-strength aluminum alloy, each chainring is precision CNC-machined and anodized for long-lasting durability and corrosion resistance.
Product Specifications
| Item | Specification |
|---|---|
| Product Name | STONE 146BCD Narrow Wide Chainring |
| BCD | 146BCD |
| Arm Design | 4 Arms |
| Compatible Crankset | Shimano XTR M960 |
| Tooth Profile | Narrow Wide |
| Drivetrain Type | 1x Only |
| Teeth Options | 44T–50T |
| 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 |
| Weight | Approx. 74–110 g |
Important Compatibility Notice
This chainring is designed for 1x drivetrain systems only. It is not compatible with 2x drivetrains and does not support front shifting.
Compatible Crankset
This chainring fits:
- Shimano XTR M960 crankset only
Please confirm your crankset model and BCD before placing an order.
Chain Compatibility
| Chain Type | Compatibility |
|---|---|
| MTB 8 / 9 / 10 / 11 / 12-speed chains | Compatible |
| Road 8 / 9 / 10 / 11-speed chains | Compatible |
| Shimano 12-speed road chains | Compatible with quick link replacement |
| SRAM AXS 12-speed Flattop chains | Not compatible |
SRAM AXS Flattop Chain Notice
The standard version does not support SRAM AXS 12-speed Flattop chains. If you require compatibility with SRAM AXS 12-speed Flattop chains, please contact us before ordering.
Material & Manufacturing Advantages
1. Premium 7075-T651 Aluminum Alloy
This chainring is made from 7075-T651 high-strength aluminum alloy, delivering excellent stiffness, strength, and durability. The aluminum is supplied by Aleris, a USA-based aluminum supplier that also serves aerospace manufacturers such as Airbus, Boeing, and Bombardier.
2. High-Precision CNC Machining
Each chainring is produced by high-speed CNC machining with a processing precision of 0.03 mm. This ensures:
- Accurate tooth profile
- Smooth chain engagement
- Stable drivetrain performance
- Reliable power transfer
3. Narrow-Wide Tooth Design
The narrow-wide tooth profile is purpose-built for 1x drivetrains. It improves chain retention and reduces the chance of chain drop during riding.
Package Includes
- 1 × Chainring
- 4 × Bolts
