产品规格
| 型号 |
FC-M131 |
| 系列 |
SHIMANO |
| Color |
Series color |
| Remarks |
SHIMANO logo |
| Bike Type |
MTB |
| Axle length of BB-UN/ ES (mm)_Threaded (chain case) |
D-NL K |
| Axle length of BB-UN/ ES (mm)_Threaded (normal) |
D-NL |
| Chain case compatible |
X |
| Chain line (mm) |
47.5 / 47.5+t |
| Chain ring combination |
48 |
| Compatible BB type_Square |
X |
| Compatible chain |
HG for 8-speed, HG for 7-speed |
| Crank arm length (mm)_170.0 |
X |
| Gear arms |
4 |
| Optional chain guard_With chain guard |
X |
| Optional chain guard_Without chain / bash guard |
X |
| Recommended BB_Threaded (chain case) |
BB-UN100-K |
| Recommended BB_Threaded (normal) |
BB-UN100 |
| Threaded BB shell width_68mm |
X |
| Threaded BB shell width_73mm |
X |
| Crank arm fixing bolt_Without |
X |
| Q-factor (mm) |
1805 |
