STONE Direct Mount Chainring 6mm offset 3 bolts interface GXP Narrow-Wide Single Chainring for MTB & Gravel Bike (26T-40T)
Engineered from imported AL7075-T651 aircraft-grade aluminum with a hardness of 150HB, the STONEDW SR3-6OF direct mount chainring delivers superior strength, stiffness, and durability for serious riders who demand reliable chain retention and efficient power transfer.
Key Features
- Premium Material: Imported AL7075-T651 aluminum, CNC machined and surface anodized for corrosion resistance and a sleek, long-lasting finish
- Two Style Options:
- Hollow/Cutout Design (YL) – Lighter weight, reduced chain noise, better crosswind resistance – ideal for lightweight builds
- Closed/Solid Design (YF) – Enhanced stiffness, reduced flex under high torque – built for power output
- Precision Engineering: Interface parallelism guaranteed within 0.02mm for smooth, wobble-free rotation
- Reinforced Tooth Profile: Thickened outer edge design increases rigidity and minimizes lateral deflection
- 6mm Inboard Offset: Chainline = 49mm, compatible with standard SRAM DUB/GXP spindle cranksets
- 3-Bolt Direct Mount Interface: Single, foolproof installation orientation
- Thickness: 9.6mm
Chain Compatibility
Shimano 9/10/11/12-speed chains SRAM 9/10/11-speed chains (any brand) SRAM 12-speed Non-Flattop chains (default) Custom tooth profile available for SRAM AXS/T-Type Flattop chains
Crank Compatibility
Fits SRAM XX1, XX1 Eagle, X01, X01 Eagle, GX Eagle, X1-1400, GX-1400, S-2210, X0, X9, S1400 (GXP 24mm & BB30 30mm spindle), and new DUB 3-bolt spindle cranksets.
Full Size, Diameter & Weight Chart
Hollow/Cutout Style (SR3-6OF-YL) — Tooth range 26T–40T
| Teeth | Max OD (mm) | Weight (g) | Part No. | Color |
|---|---|---|---|---|
| 26T | 113.3 | 46.5 | MT-SR8-6OF-26T-YL | Black/Silver |
| 28T | 121.5 | 53.0 | MT-SR3-6OF-28T-YL | Black/Silver |
| 30T | 129.5 | 61.5 | MT-SR3-6OF-30T-YL | Black/Silver |
| 32T | 137.5 | 68.5 | MT-SR3-6OF-32T-YL | Black/Silver |
| 34T | 146.0 | 74.0 | MT-SR3-6OF-34T-YL | Black/Silver |
| 36T | 154.0 | 84.5 | MT-SR3-6OF-36T-YL | Black/Silver |
| 38T | 162.0 | 91.5 | MT-SR3-6OF-38T-YL | Black/Silver |
| 40T | 170.0 | 95.5 | MT-SR3-6OF-40T-YL | Black/Silver |
Closed/Solid Style (SR3-6OF-YF) — Tooth range 28T–40T
| Teeth | Max OD (mm) | Weight (g) | Part No. | Color |
|---|---|---|---|---|
| 28T | 121.5 | 58.5 | MT-SR3-6OF-28T-YF | Black/Silver |
| 30T | 129.5 | 65.5 | MT-SR3-6OF-30T-YF | Black/Silver |
| 32T | 137.5 | 69.0 | MT-SR3-6OF-32T-YF | Black/Silver |
| 34T | 146.0 | 76.5 | MT-SR3-6OF-34T-YF | Black/Silver |
| 36T | 154.0 | 84.0 | MT-SR3-6OF-36T-YF | Black/Silver |
| 38T | 162.0 | 92.0 | MT-SR3-6OF-38T-YF | Black/Silver |
| 40T | 170.0 | 100.0 | MT-SR3-6OF-40T-YF | Black/Silver |
Recommended Tooth Count
| Riding Style | Tooth Count |
|---|---|
| MTB Commuting | 36T / 38T |
| Cross-Country | 32T / 34T |
| Technical Climbs | 30T / 32T |
| Trials/Stunts | 26T / 28T |
| Gravel | 38T / 40T |
Installation
- Torque: 6-8 Nm
- Tool: T25 Torx wrench
- Bolts not included
General Specifications
| Spec | Detail |
|---|---|
| Brand | STONEDW |
| Material | AL7075-T651, Hardness 150HB |
| Thickness | 9.6mm |
| Surface Treatment | CNC Anodized |
| Offset | 6mm Inboard |
| Interface | 3-Bolt Direct Mount |
| Colors | Anodized Black / Silver |
| Bike Type | MTB (135/142mm rear spacing), Gravel (3-bolt crank) |
