STONE 107BCD Oval Narrow-Wide Chainring for SRAM Force AXS 4-Arm Cranksets (1x, 36T–60T)
Product Specifications
| Item | Specification |
|---|---|
| Brand | STONE |
| Product | 107BCD Oval Narrow-Wide Chainring |
| Material | High-strength aluminum 7075-T651 |
| Hardness | HB150 |
| BCD | 107 BCD |
| Crank compatibility | SRAM Force AXS 4-arm crankset only |
| Tooth design | Oval, narrow-wide |
| Thickness | 4 mm |
| Color | Black |
| Surface treatment | Anodized, CNC machined |
| CNC accuracy | 0.03 mm |
| Bolts included | Yes, 4 bolts included |
Compatibility
Compatible With
- SRAM Force AXS BCD107 crankset
- Quarq BCD107 power meter spider
- Cranksets fitted with a STONE 107 spider
Not Compatible With
- Other 107 BCD cranksets
- 2x drivetrain setups
- Front derailleurs and front shifting systems
This chainring is designed for 1x drivetrains only and cannot be used as a 2x chainring.
Chain Compatibility
This chainring is offered in two tooth profile versions. Choose the correct one for your chain type.
Option 1: Non-AXS 9–12 Speed Version
Select this version if you use standard 9–12 speed chains, including:
- SRAM 9 / 10 / 11-speed chains
- Shimano 9 / 10 / 11 / 12-speed chains
- Other standard 9–12 speed chains
Option 2: AXS Flattop 12 Speed Version
Select this version if you use:
- SRAM 12-speed AXS Flattop chain
Important Notice
The Non-AXS 9–12 Speed version and the AXS Flattop 12 Speed version use different tooth profiles and are not interchangeable. Please confirm your chain type before ordering.
Offset Information
| Teeth | Offset |
|---|---|
| 34T–38T | 0 mm inner offset |
| 40T–60T | 2 mm inner offset |
The 2 mm inner offset on larger sizes helps improve chainline and delivers smoother drivetrain operation.
Size, Diameter & Weight
| Teeth | Max Diameter | Weight |
|---|---|---|
| 36T | 162 mm | 58 g |
| 38T | 170 mm | 65 g |
| 40T | 178 mm | 78 g |
| 42T | 186 mm | 84 g |
| 44T | 194 mm | 91 g |
| 46T | 202 mm | 108 g |
| 48T | 210 mm | 116 g |
| 50T | 219 mm | 125 g |
| 52T | 226 mm | 132 g |
| 54T | 235 mm | 143 g |
| 56T | 242 mm | 152 g |
| 58T | 250 mm | 163 g |
| 60T | 259 mm | 173 g |
Weight may vary slightly between production batches.
Key Features
- Oval narrow-wide tooth design — Improves pedaling efficiency and provides better chain retention for 1x drivetrains.
- High-strength 7075-T651 aluminum — Premium aircraft-grade alloy for excellent stiffness, durability, and wear resistance.
- Precision CNC machining — Machined to 0.03 mm accuracy for precise fitment and smooth chain engagement.
- Anodized finish — Black anodized surface offers better corrosion resistance and a clean, premium look.
- Optimized chainline — 34T–38T: 0 mm inner offset; 40T–60T: 2 mm inner offset for improved chainline performance.
- Wide size range — Available from 36T to 60T to suit different riding styles and gear ratio needs.
Package Includes
- 1 × STONE 107BCD Oval Narrow-Wide Chainring
- 4 × Chainring bolts
Decorative Caps – A Cleaner, More Stylish Crankset
For a cleaner, more stylish look, decorative caps can be purchased separately here:
Stone Bike Chainring Decorative Bolts Caps Cover for Force 107BCD 12-Speed Crankset
Note: Decorative covers are not included and must be purchased separately. They are designed for STONE chainrings only and may not fit chainrings from other brands.
Why Choose This Chainring?
The STONE 107BCD oval chainring is built for riders who want a lightweight, stiff, and durable upgrade. The oval profile helps reduce the dead spot in your pedal stroke, while the narrow-wide tooth design improves chain stability and helps reduce chain drop.
With high-precision CNC machining and premium 7075-T651 aluminum construction, it is a dependable choice for performance riding, training, racing, and custom bike builds.
Important Reminder Before Purchase
Please verify your crankset model carefully before ordering:
- This chainring fits the SRAM Force AXS 107BCD 4-arm crankset only.
- It does not fit other 107BCD cranksets.
- For SRAM AXS Flattop 12-speed chain compatibility, choose the customized AXS tooth version or contact us before purchase.
