Upgrade your drivetrain with the Stone Oval Direct Mount Chainring, designed for ROTOR 24mm axle 3D+ 3DF. Featuring an oval chainring profile and a narrow-wide tooth design, it helps improve pedaling efficiency, enhance chain retention, and deliver a smoother riding experience on rough trails.
Made from 7075-T651 aerospace-grade aluminum, this chainring combines high stiffness, low weight, and excellent durability for MTB, trail, and cross-country riding.
Specifications
| Item | Details |
|---|---|
| Brand | Stone |
| Model | Oval Chainring for ROTOR 24mm Axle 3D+ 3DF |
| Material | 7075-T651 Aerospace-Grade Aluminum |
| Color | Anodized Black |
| Speed Compatibility | standard 9 / 10 / 11 / 12 Speed (Not for AXS flattop chain) |
| Thickness | 9mm |
| Hardness | HB150 |
| Chainline | 52mm |
| Frame Compatibility | Boost 148 |
| Tooth Options | 30T / 32T / 34T / 36T / 38T |
| Machining Accuracy | 0.03mm |
Compatibility
This chainring is designed for:
- For ROTOR 24mm axle 3D+
- For ROTOR 24mm axle 3DF
Suitable for:
- MTB
- Trail riding
- Cross-country riding
- Boost 148 frames
Note: The removal/disassembly tool is sold separately.
Size, Weight & Maximum Diameter
| Teeth | Maximum Diameter | Weight |
|---|---|---|
| 30T | 130mm | 63g |
| 32T | 138mm | 68g |
| 34T | 146mm | 74g |
| 36T | 154mm | 84g |
| 38T | 162mm | 91g |
Product Advantages
1. High-Strength Aerospace Aluminum
Made from 7075-T651 aluminum, supplied by Aleris USA, a trusted aluminum supplier serving major aircraft manufacturers such as Airbus, Boeing, and Bombardier. This material provides outstanding stiffness, strength, and long-term durability.
2. High-Precision CNC Processing
Each chainring is CNC-machined with a working accuracy of up to 0.03mm, ensuring accurate fitment, stable drivetrain performance, and efficient power transfer.
3. Enhanced Chain Retention
Stone’s new narrow-wide wolf tooth profile grips the chain securely, helping prevent chain drops during intense riding, climbing, and rough terrain.
4. Cleaner and Quieter Drivetrain
The optimized tooth profile improves self-cleaning performance by helping remove mud, dirt, and debris, while also reducing drivetrain noise.
Package Includes
- 1 × Stone Oval Direct Mount Chainring
Note: Disassembly/removal tool is not included and is sold separately.
