Stone 123 BCD Round Chainring for Campagnolo Ekar Crankset — 1x13 Speed Gravel / Road C13 Chain Compatible
Upgrade your Campagnolo Ekar 1x13 drivetrain with this high-precision Stone round chainring.
Designed specifically for Campagnolo Ekar cranksets, this chainring is compatible only with the Campagnolo Ekar C13 13-speed chain. Made from high-strength 7075-T651 aluminum alloy, it offers excellent stiffness, durability, and reliable shifting performance for gravel and road riding.
Each chainring is CNC-machined with high accuracy and finished with a durable anodized surface for long-lasting performance.
Please check compatibility carefully before ordering.
| Item | Specification |
|---|---|
| Crank Compatibility | Campagnolo Ekar crankset |
| Drivetrain | 1x13 speed |
| Chain Compatibility | Campagnolo Ekar C13 chain only |
| BCD | 123 BCD |
| Chainring Type | Round |
| Bolt Compatibility | (Bolts not included)Use original Campagnolo Ekar bolts |
Important:
This chainring is designed only for Campagnolo Ekar 1x13-speed systems and the Campagnolo Ekar C13 chain.
| Feature | Details |
|---|---|
| Brand | Stone |
| Material | High-strength Aluminum 7075-T651 |
| Hardness | HB150 |
| CNC Accuracy | 0.03 mm |
| Thickness | 4 mm |
| Color | Black |
| Surface Treatment | Anodized, high-speed CNC machined |
| Speed Support | Campagnolo 13-speed |
| Package | 1 chainring only |
| Bolts Included | No |
| Teeth | Maximum Diameter | Approx. Weight |
|---|---|---|
| 38T | 162 mm | 65 g |
| 40T | 170 mm | 70 g |
| 42T | 178 mm | 78 g |
| 44T | 186 mm | 87 g |
| 46T | 194 mm | 98 g |
| 48T | 202 mm | 109 g |
| 50T | 210 mm | 116 g |
Designed for Campagnolo Ekar
Compatible with Campagnolo Ekar 1x13-speed cranksets.
C13 Chain Compatible
Made for the Campagnolo Ekar C13 chain only.
High-Strength 7075-T651 Aluminum
Provides excellent stiffness, strength, and durability.
Precision CNC Machining
Machined with 0.03 mm accuracy for reliable fit and performance.
Durable Anodized Finish
Black anodized surface improves corrosion resistance and long-term appearance.
Multiple Tooth Options
Available from 38T to 50T for different riding styles and terrain.
Most Stone chainrings are made to order.
Please allow 3–5 days preparation time before shipping.
Thank you for your understanding.










