The Stone Direct Mount Chainring is designed for cranksets using the Easton EC90 SL CINCH system interface. It is ideal for gravel and road bike setups, offering precise chain engagement, improved chain retention, and smooth drivetrain performance.
Made from high-strength 7075-T651 aluminum, this chainring combines lightweight construction, excellent stiffness, and long-lasting durability. The narrow-wide tooth profile helps reduce chain drop and improves mud and dirt clearance during riding.
We offer two tooth profiles:
Version 1 is compatible with 9–12 speed standard chains
Version 2 is compatible with AXS Flattop / T-Type chains.
Both options are available.
Specifications
| Item | Details |
|---|---|
| Brand | Stone |
| Material | High-strength Aluminum 7075-T651 |
| Color | Black, anodized |
| Speed Compatibility | 9 / 10 / 11 / 12-speed chains |
| Crank Interface | For Easton EC90 SL CINCH system interface |
| Recommended Use | Gravel / Road bike |
| Not Recommended For | MTB |
| Thickness | 8mm |
| Hardness | HB150 |
| Chainline | 46mm |
| Offset | 3.5mm inner offset |
| CNC Precision | 0.03mm |
| Tooth Profile | Narrow-wide |
Compatibility
This chainring is designed to fit:
- For Easton EC90 SL CINCH cranksets
- For Cranks with the same interface as Easton EC90 SL
- For Spiders with the same interface
- For Power meters with the same interface
Important:
If your crank, spider, or power meter uses the same CINCH interface as Easton EC90 SL, this chainring will fit.
Chain Compatibility Notes
Please read the following notes carefully before ordering:
Shimano 12-Speed Road Chain
If you use a Shimano 12-speed road bike chain, you need to replace the original Shimano quick link with another compatible brand, such as KMC or YBN.
The original Shimano 12-speed quick link is too narrow and may not work properly with this chainring.
SRAM AXS Flattop Chain
The default tooth option does not support SRAM AXS Flattop chains.
If you use a SRAM AXS Flattop chain, please select the AXS tooth option when placing your order.
Important Notice
This chainring is recommended for:
- Gravel bikes
- Road bikes
- CX / cyclocross-style riding
It is not recommended for MTB use, because MTB drivetrains usually require a different chainline.
Please confirm your crank interface, chain type, and chainline before purchase.
Package Includes
- 1 × Stone Bike Chainring
Most Stone chainrings produce by order, it need several days to produce. Hope you would understand 3-5days prepare time.
