not compatible with double chainring / 2x setup.
- for 144BCD chainring
- for SRAM 8-bolt direct mount crank interface
- for compatible SRAM FORCE crankset
- for compatible SRAM RED crankset
- for compatible SRAM RIVAL crankset
- for fixie bike / fixed gear bike / single speed bike
- not for double chainring setup
- not for 2X drivetrain setup
- supports one 144BCD chainring
- for 1X single chainring setup only
- for single speed chainring setup
- for fixie / fixed gear chainring setup
- does not support double chainring installation
- for SRAM 8-bolt direct mount crank
- for SRAM FORCE crankset
- for SRAM RED crankset
- for SRAM RIVAL crankset
- Brand: STONE
- Product Type: Chainring Spider / Spider Adapter
- BCD: 144BCD
- Crank Interface: for SRAM 8-bolt direct mount
- Compatible Cranksets: for SRAM FORCE / RED / RIVAL cranksets with 8-bolt interface
- Drivetrain Setup: 1X single chainring only
- Material: Aluminum 7075-T6
- Manufacturing: Full CNC machining
- Machining Precision: up to 0.03mm
- Side Play: less than 0.04mm
- Thickness: 14mm
- Weight: about 93g
- Offset: 6.5mm inner offset
- Reference Chainline: about 44.5mm on SRAM FC-FRC-D1 crank
This spider adapter allows installation of one 144BCD chainring only. It is suitable for 1X single speed, fixie bike, fixed gear bike, and single chainring drivetrain setups.
Designed for SRAM 8-bolt direct mount crank interface, including compatible SRAM FORCE, RED, and RIVAL cranksets.
Made from high-strength 7075-T6 aluminum alloy, offering excellent stiffness, durability, and reliable riding performance.
Fully CNC machined with high precision. Machining accuracy is up to 0.03mm, helping ensure accurate fitment and stable chainring positioning.
Side play is controlled to less than 0.04mm, helping provide stable installation and smooth drivetrain performance.
The 6.5mm inner offset helps provide a suitable chainline for single chainring use. The reference chainline on SRAM FC-FRC-D1 crank is about 44.5mm.
- 144BCD Spider Adapter × 1
- this spider adapter is designed for 1x single chainring setup only.
- it can install one 144bcd chainring only.
- it is not compatible with double chainring or 2x drivetrain setup.
- please confirm your crank is SRAM 8-bolt direct mount interface before ordering.
- please check chainline and frame clearance before installation.

