規格 Specifications
| Model No. | SM-CRM85 |
| Series | DEORE XT M8100 Series |
| Color | Series Color |
| Gear Speed / Chainring Configuration | 1 (Single / 1x Drivetrain) |
| Rear Speeds | 12-speed |
| DYNAMIC CHAIN ENGAGEMENT+ | ✔ (Yes) |
| Mount Type | Direct Mount |
| Chainring Teeth Options | 28T, 30T, 32T, 34T, 36T |
| Chain Guard Type | Without Chain/Bash Guard |
| Crankset Compatibility | FC-M8100-1, FC-M8120-1, FC-M8130-1 |
| Material / Body Carrier | Carbon Fiber Reinforced Plastic (CFRP) / Aluminum Arm |
| Material / Teeth | Steel (Plated) |
| Compatible Chain | HG 12-speed (e.g., CN-M8100) |