STONE 110BCD Chainring Spider Adapter for Rotor Direct Mount Cranks (Kapic, ALDHU, VEGAST, Hawk, Raptor, INpower)
This spider adapter bridges ROTOR Direct Mount interface cranksets and the standard 110BCD road chainring system. Instead of being limited to dedicated ROTOR chainrings, riders can choose from a wide range of aftermarket road and gravel chainrings in both single and double configurations.
The adapter is designed for ROTOR Direct Mount interface cranksets and converts them to the standard 110BCD road chainring system, greatly expanding the choice of road and gravel chainrings.
It supports both 1x and 2x drivetrain setups, making it a flexible upgrade for riders who want to change chainring sizes or brands without replacing their cranks.
Compatibility
The adapter fits ROTOR Direct Mount interface cranksets and accepts standard 110BCD chainrings:
| Category | Compatible Items |
|---|---|
| Cranksets | Rotor Kapic / Aldhu / Vegast / Hawk / Raptor / 2INpower / INpower |
| Chainrings | 110BCD 4-arm / 5-arm chainrings |
| Drivetrain setups | 1x / 2x |
Compatible 4-arm chainring series include:
- Shimano Dura-Ace R9100 / R9200
- Shimano Ultegra R8000 / R8100
- Shimano 105 R7000 / R7100
- Shimano Tiagra 4700
- Shimano 5800 / 6800 / 9000 series
Precision & Tolerance Control
- Mounting surface flatness: ≤ 0.02mm
- Chainring runout: ≤ 0.04mm
- Position tolerance: ± 0.02mm
These precision controls help improve shifting accuracy, reduce chainring deformation, and enhance drivetrain stability under load.
Specifications
- Brand: STONE
- Product Type: Chainring Adapter Spider / Chainring Converter
- Crank Interface: ROTOR Direct Mount Interface
- Fit Crank Models: ALDHU / KAPIC / VEGAST / HAWK / RAPTOR / INpower / 2INpower
- BCD: 110BCD
- Chainring Compatibility: 4-arm / 5-arm road chainrings
- Drivetrain Compatibility: 1x / 2x
- Material: AL7075-T651 Aluminum
- Process: Full CNC Machining
- Finish: Hard Anodized Black
- Thickness: 13mm
- Weight: approx. 45g
Package Includes
- 1 × Chainring Adapter Spider
Chainrings and bolts are not included.
Compatibility Note
Please check your crank interface before purchase. This adapter is not compatible with the following systems:
- Shimano direct mount systems
- SRAM direct mount systems
- Rotor 24mm spindle spider interface
- Rotor 30mm spindle spider interface
Product Advantages
1. 110BCD Conversion
Converts ROTOR Direct Mount interface cranksets to 110BCD, allowing riders to use a wide range of aftermarket road double or single chainrings.
2. Aerospace-Grade Aluminum
Made from AL7075-T651 aluminum, offering excellent stiffness, strength, and durability.
3. High-Precision CNC Machining
Fully CNC-machined with strict tolerance control for accurate installation and stable drivetrain performance.
4. Improved Drivetrain Stability
Excellent flatness and low chainring runout help improve shifting accuracy and reduce chain drop.
5. Lightweight & Rigid Design
An optimized structure balances stiffness, durability, and weight for road and gravel riding.
