- 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)
TECHNOLOGIES
PRODUCT SPECIFICATIONS
MODEL NO |
FC-M8120-1 |
SERIES |
DEORE XT M8100 Series |
Color |
Series color |
Average weight |
660 (36T) 642 (34T) 628 (32T) 630 (30T) 616 (28T) |
Chainring combination |
28T, 30T, 32T, 34T, 36T |
Compatible bottom bracket type_Outboard |
✔ |
Crank fixing screw included |
✔ |
Crank arm length (mm)_165 |
✔ |
Crank arm length (mm)_170 |
✔ |
Crank arm length (mm)_175 |
✔ |
Crank arm length (mm)_180 |
✔ |
Spider/Gear arms |
4 |
HOLLOWTECH II |
✔ |
Optional chain guard_Without chain/bash guard |
✔ |
Recommended bottom bracket_Press-fit |
BB-MT800-PA |
Recommended bottom bracket_Threaded (normal) |
BB-MT800 |
Threaded bottom bracket shell width (mm)_68 |
✔ |
Threaded bottom bracket shell width (mm)_73 |
✔ |
Q-factor (mm) |
178 |
Chain line (mm) |
55 |
Compatible chain |
HG 12-speed |
P.C.D. (mm) |
Direct |
Rear speeds |
12 |
O.L.D._QR/Nut (mm) |
141 |
O.L.D._Thru (mm) |
148 |