Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins
Stone Bike Chainring for AXS Flattop T-type Chain 12S 3mm Offset Direct Mount Round for Sram X0 XX SL 26t To 40T hollow aero style 8 pins

STONE 7075 Direct Mount Chainring for SRAM T-Type & AXS Flattop 12S, 26T–40T

8-bolt direct mount for SRAM Eagle cranksets
Fits SRAM T-Type MTB and AXS Flattop 12-speed chains
3mm offset, 52mm chainline, 26T–40T in Hollow or Aero style

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STONE 7075-T651 Direct Mount Chainring for SRAM T-Type & AXS Flattop 12-Speed, 3mm Offset, 26T–40T (XX Eagle SL / XX / X0 / GX Eagle)

This STONE 8-bolt direct mount chainring is purpose-built for SRAM T-Type MTB 12-speed chains and SRAM AXS Flattop 12-speed chains, delivering precise engagement and dependable performance on the trail.

It features a 3mm inner offset and a 52mm chainline, making it suitable for Boost 148 frames, 142mm frames, and ordinary 135mm frames depending on your crank and drivetrain setup.

CNC-machined from aerospace-grade 7075-T651 aluminum alloy, it combines high stiffness, strong durability, and a lightweight build for serious riding.

Specifications

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 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

Important Compatibility Notice

Please check your chain type, crank model, and frame spacing carefully before purchasing.

This chainring is designed for:

  • SRAM T-Type MTB 12-speed chain
  • SRAM AXS Flattop 12-speed chain

It fits the following cranksets:

  • SRAM XX Eagle SL crankset
  • SRAM XX Eagle crankset
  • SRAM X0 Eagle crankset
  • SRAM GX Eagle crankset
  • Other SRAM direct mount cranksets with the same interface

Chainring Style Options

This chainring is available in two styles: Hollow Style and Aero Style.

Style Advantages Notice
Hollow Style Lighter design, lower chain noise Smallest size is 28T
Aero Style Higher rigidity, integrated appearance, some aerodynamic benefit Chain noise may be slightly higher

Hollow Style

The Hollow Style is a great choice for riders who prefer lower weight and a quieter drivetrain.

Please note: Hollow Style is not available in 26T. The smallest Hollow size is 28T.

Aero Style

The Aero Style provides stronger rigidity and a more integrated look, along with some aerodynamic benefit—especially appealing to riders who prefer a clean, solid appearance.

Please note: Aero Style may produce slightly more chain noise than Hollow Style.

Size & Weight — Aero Style

Size Diameter Weight
26T Aero 113.3mm 49g
28T Aero 121.5mm 54g
30T Aero 129.5mm 60g
32T Aero 137.5mm 66g
34T Aero 146mm 75g
36T Aero 154mm 84g
38T Aero 162mm 90g
40T Aero 170mm 98g

Size & Weight — Hollow Style

Size Diameter Weight
28T Hollow 121.5mm 53g
30T Hollow 129.5mm 58g
32T Hollow 137.5mm 61g
34T Hollow 146mm 69g
36T Hollow 154mm 75g
38T Hollow 162mm 80g
40T Hollow 170mm 86g

Note: Actual weight may vary slightly due to production tolerance.

Features

  • Designed for SRAM T-Type MTB 12-speed chains
  • Compatible with SRAM AXS Flattop 12-speed chains
  • Direct mount design for SRAM Eagle cranksets
  • 3mm inner offset with 52mm chainline
  • Supports Boost 148, 142mm, and ordinary 135mm frames
  • Aerospace-grade 7075-T651 aluminum alloy construction
  • High stiffness and lightweight build
  • Precision CNC machining
  • Hollow and Aero styles available
  • Multiple tooth options from 26T to 40T

Advantages

1. Aerospace-Grade 7075-T651 Aluminum

Made from high-stiffness 7075-T651 aluminum alloy, this chainring offers excellent strength, durability, and lightweight performance—built for demanding MTB conditions and long-term drivetrain reliability.

2. High-Precision CNC Machining

Produced with precision CNC machining, the processing accuracy reaches 0.03mm. This helps ensure accurate installation, stable chain engagement, and consistent riding performance.

3. Optimized Tooth Profile for SRAM 12-Speed Chains

The tooth profile is designed specifically for SRAM T-Type MTB 12-speed chains and SRAM AXS Flattop 12-speed chains, improving chain retention and overall drivetrain compatibility.

Package Includes

  • 1 × Bike Chainring