FEATURES
- Superior chain retention
- Special MTB gear teeth profile improves chain engagement and retention
- DYNAMIC CHAIN ENGAGEMENT+
- Rigid and lightweight design for aggressive trail riding
- Hollow forged crank maximizes power transfer while limiting weight
- HOLLOWTECH II
- Q-factor: 178 mm
- Chainline: 55 mm
- Weight: 616 g (28T), 630 g (30T), 628 g (32T), 642 g (34T), 660 g (36T)
PRODUCT SPECIFICATIONS
| MODEL NO | FC-M8120-1 |
|---|---|
| SERIES | DEORE XT M8100 Series |
| Color | Series color |
| Average weight | 616 (28T) 630 (30T) 628 (32T) 642 (34T) 660 (36T) |
| Rear speeds | 12 |
|---|---|
| Compatible chain | HG 12-speed |
| Chain line (mm) | 55 |
| O.L.D.|Thru (mm) | 148 |
| O.L.D.|QR/Nut (mm) | 141 |
| P.C.D. (mm) | Direct |
| Spider/Gear arms | 4 |
| Chainring combination | 28T, 30T, 32T, 34T, 36T |
| Q-factor (mm) | 178 |
| Crank arm length (mm)|165 | ✔ |
| Crank arm length (mm)|170 | ✔ |
| Crank arm length (mm)|175 | ✔ |
| Crank arm length (mm)|180 | ✔ |
| Optional chain guard|Without chain/bash guard | ✔ |
| HOLLOWTECH II | ✔ |
| Compatible bottom bracket type|Outboard | ✔ |
| Recommended bottom bracket|Threaded (normal) | BB-MT801 |
| Recommended bottom bracket|Press-fit | BB-MT800-PA |
| Threaded bottom bracket shell width (mm)|68 | ✔ |
| Threaded bottom bracket shell width (mm)|73 | ✔ |
| Crank fixing screw included | ✔ |
