STONE 110BCD Chainring Spider Adapter for Rotor 30mm Spindle Cranks (REX1, REX2, 3D, 3DF, 3DF+) – Road & Gravel 1x/2x
The STONE chainring spider adapter is built for Rotor 30mm spindle cranksets, converting them to 110BCD road chainring compatibility. It opens up a wide selection of standard road chainrings for road and gravel riders running 1x or 2x drivetrains.
This spider adapter is designed specifically for Rotor 30mm spindle cranksets, covering the Rotor REX1, REX2, 3D, 3DF and 3DF+ models.
Once fitted, it converts the crankset to 110BCD road chainring compatibility, making the crank suitable for both road and gravel riding. It supports 1x and 2x drivetrain setups, so you can run a single chainring for simplicity or a double setup for a wider gear range.
Compatibility
| Item | Details |
|---|---|
| Crank spindle | Rotor 30mm spindle cranksets |
| Crank models | Rotor REX1 / REX2 |
| Crank models | Rotor 3D / 3DF / 3DF+ |
| Chainring BCD | 110BCD, 4-arm / 5-arm chainrings |
| Drivetrain | 1x and 2x setups |
Compatible chainring series include:
- Shimano 105 R7000 / 5800 / R7100
- Shimano Ultegra R8000 / 6800 / R8100
- Shimano Dura-Ace R9100 / 9000 / R9200
- Shimano Tiagra 4700
Specifications
- Brand: STONE
- Product Type: Chainring Spider Adapter
- Crank Compatibility: Rotor 30mm spindle cranksets
- Fit Crank Models: Rotor REX1 / REX2 / 3D / 3DF / 3DF+
- BCD: 110BCD
- Chainring Type: 4-arm / 5-arm road chainring
- Drivetrain Compatibility: 1x / 2x
- Material: 7075-T651 aluminum alloy
- Material Source: Aleris USA
- Hardness: HB150
- Color: Black
- Surface Treatment: Anodized
- Thickness: 13mm
- Chainline: Same as original Rotor size
- Weight: approx. 40g
Advantages
1. High-Strength Aluminum
Made from 7075-T651 aerospace aluminum alloy, offering excellent stiffness, durability, and a long service life.
2. Precision CNC Machining
High-precision CNC machining with working accuracy up to 0.03mm helps ensure accurate installation and stable riding performance.
3. 110BCD Conversion
Converts Rotor 30mm spindle cranksets to 110BCD, giving riders access to a wider range of road and gravel chainring options.
4. Wide Chainring Compatibility
Compatible with 110BCD 4-arm and 5-arm chainrings.
5. Stable Chainline
Designed to keep the same chainline as the original Rotor size for smooth drivetrain performance.
Installation Notice
Before purchasing, please confirm your crank model, spindle type, chainring BCD, and chainring arm type.
This adapter is designed for Rotor 30mm spindle cranksets, including REX1, REX2, 3D, 3DF and 3DF+.
Professional installation is recommended.
