STONE 144BCD Chainring Spider for 1x Cranksets – CNC 7075 Aluminum, SRAM 3-Bolt & 8-Bolt Direct Mount, ROTOR, and Easton EC90
The STONE 144BCD chainring spider converts compatible 1x cranksets to the 144BCD chainring mounting standard, offering road and gravel riders a clean direct-mount upgrade path.
This spider is designed exclusively for 1x drivetrain setups and supports 1x chainrings only. It is not intended for 2x or 3x configurations.
It is available in multiple interface versions, including options covering SRAM cranksets:
3-bolt and 8-bolt direct mount, as well as ROTOR and Easton cranksets — four interface types in total. Choose the version that matches your crank’s interface.
Machined entirely from CNC-cut, high-strength 7075 aluminum, the spider measures 8mm thick with a 7mm inner offset, delivering a strong yet lightweight construction.
Specifications
- BCD: 144BCD
- Thickness: 8mm
- Hollow style weight: 70g
- Aero style weight: 110g
Installation & Offset
- Designed for 144BCD chainring installation
- Inner offset: 7mm
- Suitable for 1x drivetrain configurations
Compatibility
This spider is offered in four interface versions. Check your crank’s interface shape before ordering.
| Interface | Compatible Cranksets |
|---|---|
| SRAM 3-Bolt (GXP / BB30 / PF30 road cranks) | FORCE 11-Speed, FORCE 22, RIVAL 11, RIVAL 22, XPLR |
| SRAM 8-Bolt (AXS / Quarq) | FORCE AXS 12-Speed, RED AXS 12-Speed, RIVAL AXS, Quarq road power meter cranksets |
| ROTOR | KAPIC, Aldhu, Vegast, Hawk, Raptor, inPower, 2INpower (new version) |
| Easton / Race Face | EC90, EC90SL, XXE, GP3, and road cranks using the Easton / Race Face style interface |
Note: Compatible with 1x chainrings only. Please verify the crank interface shape before ordering.
Material & Process
- Material: 7075 aluminum
- Process: full CNC machining
- Strong and lightweight construction
Package
- 1 x 144BCD spider
