STONE 144BCD Chainring Spider Adapter for SRAM 8-Bolt FORCE, RED & RIVAL Cranksets – 1X Single Speed, Fixie & Fixed Gear Conversion
This spider adapter converts SRAM 8-bolt direct mount cranksets into a 144BCD single-chainring platform, giving 1X single speed, fixie, and fixed gear riders a direct path to a clean, dedicated drivetrain.
The adapter is designed to carry one 144BCD chainring only, which makes it a natural fit for 1X single speed, fixie, and fixed gear builds where a single front ring is all you need.
Important: This adapter supports 1X single chainring setups only. It is not compatible with double chainring or 2X drivetrain configurations.
Compatibility
- Fits 144BCD chainrings
- Designed for the SRAM 8-bolt direct mount crank interface
- Compatible with SRAM FORCE cranksets
- Compatible with SRAM RED cranksets
- Compatible with SRAM RIVAL cranksets
- Suitable for fixie, fixed gear, and single speed bikes
- Not for double chainring setups
- Not for 2X drivetrain setups
Chainring Compatibility
The spider adapter is built to install one 144BCD chainring only.
- Supports a single 144BCD chainring
- For 1X single chainring setups only
- Suitable for single speed chainring setups
- Suitable for fixie and fixed gear chainring setups
- Does not support double chainring installation
Note: This spider is for 1X single chainring use only and can install one chainring only.
Supported Crank Interface
Please confirm your crank interface before ordering. This model is made for SRAM 8-bolt direct mount cranksets.
- For SRAM 8-bolt direct mount cranks
- Compatible with SRAM FORCE cranksets
- Compatible with SRAM RED cranksets
- Compatible with SRAM RIVAL cranksets
Product Specifications
| Specification | Details |
|---|---|
| Brand | STONE |
| Product Type | Chainring Spider / Spider Adapter |
| BCD | 144BCD |
| Crank Interface | SRAM 8-bolt direct mount |
| Compatible Cranksets | 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 |
Product Advantages
1. Designed for 144BCD 1X Setups
The adapter allows installation of one 144BCD chainring only, making it well suited to 1X single speed, fixie, fixed gear, and other single chainring drivetrain configurations.
2. Compatible with SRAM 8-Bolt Cranks
Engineered for the SRAM 8-bolt direct mount crank interface, including compatible SRAM FORCE, RED, and RIVAL cranksets.
3. High-Strength 7075-T6 Aluminum
Machined from high-strength 7075-T6 aluminum alloy for excellent stiffness, durability, and dependable riding performance.
4. Full CNC Machining
Fully CNC machined with precision up to 0.03mm, helping ensure accurate fitment and stable chainring positioning.
5. Low Side Play
Side play is controlled to less than 0.04mm, contributing to a stable installation and smooth drivetrain performance.
6. Optimized Chainline
The 6.5mm inner offset helps deliver a suitable chainline for single chainring use. On the SRAM FC-FRC-D1 crank, the reference chainline is about 44.5mm.
Package Content
- 144BCD Spider Adapter × 1
Important Notice
- This spider adapter is designed for 1X single chainring setups only.
- It can install one 144BCD chainring only.
- It is not compatible with double chainring or 2X drivetrain setups.
- Please confirm your crank has the SRAM 8-bolt direct mount interface before ordering.
- Please check chainline and frame clearance before installation.
