107BCD Chainring Spider for SRAM FORCE/RIVAL AXS, ROTOR ALDHU and Easton EC90 Cranks – 3-Bolt, 8-Bolt, ROTOR and Easton/RaceFace Interfaces
This STONE chainring spider is built for 107BCD chainring setups and adapts to a wide range of road cranksets, including SRAM FORCE and RIVAL AXS Flattop models, ROTOR ALDHU, and Easton EC90. It is offered in four interface versions — SRAM 3-bolt, SRAM 8-bolt, ROTOR, and Easton/RaceFace — with GXP-compatible options, so you can match the spider to your exact crank before ordering.
Four Interface Versions Available
To guarantee correct fitment, the spider is produced in four distinct interface versions. Please confirm which one matches your crankset before ordering.
1. SRAM 3-Bolt Interface
Fits SRAM road cranks with GXP, BB30, or PF30 spindles.
Compatible with the following cranksets:
- SRAM FORCE 11-Speed
- SRAM FORCE 22
- SRAM RIVAL 11
- SRAM RIVAL 22
- XPLR 12s and 13s
2. SRAM 8-Bolt Interface (AXS / Quarq)
Compatible with the following cranksets:
- SRAM FORCE AXS 12-Speed
- SRAM RED AXS 12-Speed
- SRAM RIVAL AXS
- Quarq road power-meter cranksets
3. ROTOR Interface
Compatible with selected ROTOR road cranksets, including:
- KAPIC
- Hawk
- Raptor
- inPower / 2INpower (new versions)
Please verify the ROTOR crank interface shape before ordering to ensure a correct match.
4. Easton / RaceFace Interface
Compatible with the following cranksets:
- Easton EC90 / EC90SL and RaceFace road cranksets
- XXE, GP3, and Rockbros road cranks using Easton / RaceFace-style interfaces
- Road cranks using Easton / RaceFace-style interfaces
Technical Specifications
- BCD: 107mm
- Thickness: 12mm
- Weight: approx. 47–55g (depending on interface version)
- Material: CNC-machined 7075-T651 aluminum alloy
- Surface finish: anodized for corrosion resistance
Precision & Performance
- Chainring positioning tolerance: ±0.02mm
- Lateral runout after installation: ≤0.04mm
- Interface parallelism: ≤0.02mm
- 0mm offset, matching the original parameter
The high machining accuracy minimizes chainring wobble, improves front shifting performance, and reduces deformation under high pedaling loads.
Important Notes
- ✔ Compatible only with BCD107 chainrings — a perfect match for 107BCD chainrings, including FORCE 107BCD, RIVAL 107BCD, and STONE 107BCD chainrings
- ✔ Supports road double chainrings and narrow-wide single chainrings
- ❌ Not compatible with Shimano BCD110 systems
- ❌ Not compatible with Campagnolo crank interfaces
- ✔ Please check the backside of your crank to confirm the interface type before ordering
