This STONE direct mount chainring is specially designed for SRAM T-Type MTB 12-speed chains and SRAM AXS Flattop 12-speed chains.
It features a 3mm inner offset and 52mm chainline, suitable for Boost 148 frames, 142mm frames, and ordinary 135mm frames depending on crank and drivetrain setup.
Made from aerospace-grade 7075-T651 aluminum alloy, this chainring provides high stiffness, strong durability, and lightweight riding performance.
See here if want round 26-40T for MTB
Check here if want 40-56T 4.2mm offset for road bike
| Item | Details |
|---|---|
| Brand | STONE |
| Material | Aluminum 7075-T651 |
| Color | Black / Silver |
| Style Options | Hollow / Aero |
| Tooth Options | 26T / 28T / 30T / 32T / 34T / 36T / 38T / 40T |
| Chain Type | SRAM T-Type MTB 12s / SRAM AXS Flattop 12s |
| Crank Compatibility | For SRAM XX Eagle SL / XX Eagle / X0 Eagle / GX Eagle |
| Offset | 3mm inner offset |
| Chainline | 52mm |
| Frame Compatibility | Boost 148 / 142mm / ordinary 135mm frame |
| Thickness | 6.7mm |
| Hardness | HB150 |
| Processing Precision | 0.03mm |
| Package | 1 × Chainring |
Please check your chain type, crank model, and frame spacing carefully before purchasing.
This chainring is designed for:
It fits the following cranksets:
This chainring is available in two styles:
Hollow Style and Aero Style.
| Style | Advantages |
|---|---|
| Hollow Style | Lighter design, lower chain noise |
| Aero Style | Higher rigidity, integrated appearance, some aerodynamic benefit |
The Hollow Style is a great choice for riders who prefer lower weight and quieter drivetrain performance.
The Aero Style provides stronger rigidity and a more integrated look.
It also offers some aerodynamic benefit, especially for riders who prefer a clean and solid appearance.
Please note: Aero Style may produce slightly more chain noise than Hollow Style.
| Size | Diameter | Weight |
|---|---|---|
| 26T Aero | 121.5 mm | 48 g |
| 28T Aero | 129.5 mm | 55 g |
| 30T Aero | 137.5 mm | 60 g |
| 32T Aero | 146 mm | 67 g |
| 34T Aero | 154 mm | 77 g |
| 36T Aero | 162 mm | 85 g |
| 38T Aero | 170 mm | 92 g |
| 40T Aero | 178 mm | 100 g |
| Size | Diameter | Weight |
|---|---|---|
| 26T Hollow | 121.5 mm | 45 g |
| 28T Hollow | 129.5 mm | 50 g |
| 30T Hollow | 137.5 mm | 56 g |
| 32T Hollow | 146 mm | 61.5 g |
| 34T Hollow | 154 mm | 66 g |
| 36T Hollow | 162 mm | 73 g |
| 38T Hollow | 170 mm | 82.5 g |
| 40T Hollow | 178 mm | 88 g |
Made from high-stiffness 7075-T651 aluminum alloy, this chainring offers excellent strength, durability, and lightweight performance.
It is built for demanding MTB riding conditions and long-term drivetrain performance.
Produced with precision CNC machining.
The processing accuracy reaches 0.03mm, helping ensure accurate installation, stable chain engagement, and reliable riding performance.
The tooth profile is designed for SRAM T-Type MTB 12-speed chains and SRAM AXS Flattop 12-speed chains, helping improve chain retention and drivetrain compatibility.



















