Stone 8-Bolt Direct Mount Round Chainring – 0mm Offset, 52mm Chainline, 38T–48T for SRAM Eagle & XPLR
Upgrade your drivetrain with the Stone Direct Mount Round Chainring. Featuring an 8-bolt interface for SRAM direct mount cranksets, it is designed for SRAM AXS Flattop 12-speed chains and SRAM T-Type MTB 12-speed chains.
Machined from aerospace-grade 7075-T651 aluminum, this chainring delivers excellent stiffness, long-lasting durability, and precise shifting performance. The 0mm offset design creates a 52mm chainline, making it suitable for compatible SRAM Eagle direct mount cranksets.
Two styles are available to match your riding priorities:
- Hollow – lighter weight and reduced chain noise
- Aero – higher rigidity and improved power transfer
Specifications
| Item | Details |
|---|---|
| Brand | Stone |
| Product Type | Direct Mount Round Chainring |
| Material | Aerospace-grade 7075-T651 Aluminum |
| Offset | 0mm |
| Chainline | 52mm |
| Thickness | 5mm |
| Hardness | HB150 |
| Machining Accuracy | 0.03mm |
| Color Options | Black / Silver |
| Style Options | Hollow / Aero |
| Tooth Options | 38T / 40T / 42T / 44T / 46T / 48T |
| Chain Compatibility | SRAM T-Type MTB 12S / AXS Flattop 12S |
| Mount Type | SRAM Direct Mount 8-Bolts |
Compatibility
Chain Compatibility
- SRAM T-Type MTB 12-speed chain
- SRAM AXS Flattop 12-speed chain
Crankset Compatibility
| Compatible Cranksets |
|---|
| SRAM XX Eagle SL |
| SRAM XX Eagle |
| SRAM X0 Eagle |
| SRAM GX Eagle |
| SRAM GX Eagle XPLR 12S / 13S |
Important Note
Please verify your crankset interface, chain type, and required chainline before purchase. This chainring is the 0mm offset version with a 52mm chainline.
Chainring Style Options
Aero Style
The Aero Style uses a more complex manufacturing process, providing higher rigidity with reduced deformation. It is ideal for riders who need strong power transfer and stable performance under high power output.
Best for:
- High-power riding
- Racing
- Flat-road speed riding
- Riders who prefer a solid aero appearance
Hollow Style
The Hollow Style features a clean, lightweight design. It helps reduce chain noise and is less affected by crosswinds than the full aero design.
Best for:
- Lightweight builds
- Climbing
- Long-distance riding
- Daily training
- Riders who prefer lower chain noise
Size and Weight
Aero Style
| Tooth Size | Diameter | Weight |
|---|---|---|
| 38T Aero | 162mm | 97.5g |
| 40T Aero | 170mm | 101.7g |
| 42T Aero | 178mm | 110.3g |
| 44T Aero | 186mm | 118.8g |
| 46T Aero | 194mm | 131.3g |
| 48T Aero | 202mm | 138g |
Hollow Style
| Tooth Size | Diameter | Weight |
|---|---|---|
| 38T Hollow | 162mm | 90.2g |
| 40T Hollow | 170mm | 96g |
| 42T Hollow | 178mm | 108.9g |
| 44T Hollow | 186mm | 115.5g |
| 46T Hollow | 194mm | 120.8g |
| 48T Hollow | 202mm | 126.4g |
Package Includes
- 1 × Stone Direct Mount Chainring
