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Designed for 2x 12 drivetrain or 1x with 45T cassette. The all-new SHIMANO DEORE XT M8100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage.
Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.
SPECIFICATIONS:
| Model No. | RD-M8120-SGS |
| Series | DEORE XT M8100 Series |
| Color | Series color |
| Average weight | 287 g |
| Compatible chain | HG 12-speed |
| Total capacity | 45T |
| B-axle is Hollow | Yes |
| Direct Mount attachment (Conventional) | Yes |
| Fluoric coated link bushings | 7 |
| Low sprocket Max. | 45T |
| Low sprocket Min. | 45T |
| Max. front difference | 10T |
| G pulley bearing | Sealed Bearing |
| Sunken type pulley bolt | Yes |
| Pulley Teeth | 13T |
| T pulley bearing | Sealed Bearing |
| Pulley cage | SGS |
| Top-normal spring type is SHIMANO SHADOW RD+ | Yes |
| Top sprocket Max. | 10T |
| Top sprocket Min. | 10T |
| Rear speeds | 12 (Front double) |