STONE Narrow-Wide Bike Chainring for Rotor 30mm spindle Crank REX1.1 / REX2.1
Designed for demanding off-road riding, this STONE chainring features a new narrow-wide tooth profile for improved chain retention, better mud-shedding performance, and reduced drivetrain noise. Made from high-strength 7075-T651 aerospace-grade aluminum, it delivers an excellent balance of stiffness, durability, and lightweight performance.
Specifications
| Item | Details |
|---|---|
| Material | Aerospace-grade Aluminum 7075-T651 |
| Color | Black Anodized |
| Offset | 5 mm |
| Thickness | 9 mm |
| Hardness | HB150 |
| Speed Compatibility | 9 / 10 / 11 / 12 Speed (Not for AXS flattop chain) |
| Processing | High-precision CNC machining |
| Machining Accuracy | 0.03 mm |
Compatibility
Compatible with:
- For Rotor 30mm spindle Crank REX1.1
- For Rotor 30mm spindle Crank REX2.1
- For Rotor 30mm spindle Crank 3D+ XC2
- For Rotor 30mm spindle Crank 3DF XC2
Not compatible with:
- Not for Rotor R-Hawk
- Not for Rotor R-Raptor
Features
- New STONE narrow-wide tooth design for enhanced chain retention
- Helps reduce the risk of chain drop during rough riding
- Improved self-cleaning performance in muddy or dirty conditions
- Designed to reduce drivetrain noise
- CNC-machined for precise fit and smooth performance
- Black anodized finish for improved corrosion resistance and a clean appearance
Advantages
1. Premium Material
Made from high-strength 7075-T651 aluminum, offering excellent stiffness, durability, and long service life.
2. Precision CNC Machining
Manufactured with high-precision CNC processing and a working accuracy of 0.03 mm, ensuring reliable performance and a precise fit.
Package Includes
- 1 × Bike Chainring
Production & Shipping Note
Most STONE chainrings are produced to order. Please allow 3–5 days for production preparation before shipment. Thank you for your understanding.
