Product Specifications
| Item | Specification |
|---|---|
| Brand | STONE |
| Product Name | 107BCD Oval Narrow Wide Chainring |
| Material | High-strength Aluminum 7075-T651 |
| Hardness | HB150 |
| BCD | 107BCD |
| 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
- for Quarq BCD107 Powermeter Spider
- for SRAM Force AXS BCD107 Crankset
- for Crank with stone 107 Spider
Not Compatible With
- Other 107 BCD cranksets
- 2x drivetrain setups
- Front derailleurs
- Front shifting systems
This chainring is designed for 1x drivetrains only and cannot be used as a 2x chainring.
Chain Compatibility
This chainring is available with two different tooth profile options.
Please choose the correct version according to your chain type.
Option 1: Non-AXS 9-12 Speed Chain Version
Choose Non-AXS 9-12 Speed 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 Chain Version
Choose AXS Flattop 12 Speed 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.
They are not interchangeable.
Please select the correct chainring version according to your chain before placing your order.
Offset Information
| Teeth | Offset |
|---|---|
| 34T–38T | 0 mm inner offset |
| 40T–60T | 2 mm inner offset |
The 2 mm inner offset design for larger sizes helps improve chainline and provides 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 due to production batches.
Key Features
- Oval Narrow Wide Tooth Design
Helps improve pedaling efficiency and provides better chain retention for 1x drivetrain systems. - High-Strength 7075-T651 Aluminum
Made from premium aircraft-grade aluminum alloy for excellent stiffness, durability, and wear resistance. - Precision CNC Machining
CNC-machined with up to 0.03 mm accuracy for accurate fitment and smooth chain engagement. - Anodized Surface Finish
Black anodized finish provides better corrosion resistance and a clean, premium appearance. - Optimized Chainline Design
34T–38T: 0 mm inner offset
40T–60T: 2 mm inner offset for improved chainline performance. - Wide Size Range Available
Available from 36T to 60T, suitable for different riding styles and gear ratio needs.
Package Includes
- 1 × STONE 107BCD Oval Narrow Wide Chainring
- 4 × Chainring Bolts
Decorative Caps – Make Your Crankset Look Cleaner and More Stylish
Buy here, if you want
Stone Bike Chainring Decorative Bolts Caps Cover for Force 107bcd 12speed crankset
Note:
Decorative covers are not included and need to be purchased separately.
Decorative covers are designed for STONE chainrings only and may not fit chainrings from other brands.
Why Choose This Chainring?
The STONE 107BCD oval chainring is engineered for riders who need a lightweight, stiff, and durable upgrade. The oval profile helps reduce the dead spot during pedaling, while the narrow wide tooth design improves chain stability and helps reduce chain drop.
With high-precision CNC machining and premium aluminum construction, it is a reliable choice for performance riding, training, racing, and custom bike builds.
Important Reminder Before Purchase
Please check your crankset model carefully before ordering.
This chainring fits SRAM Force AXS 107BCD 4-arm crankset only.
It does not fit other 107BCD cranksets.
For SRAM AXS Flattop 12-speed chain compatibility, please choose the customized AXS tooth version or contact us before purchase.
