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[tab name=" DESCRIPTION"]
[tab name =" SPECIFICATIONS"]
| Series | ALTUS | ||
| Model no. | FC-M311 | ||
|
Color
|
1 | Black | |
| 2 | - | ||
| Rear speeds | 8/7 | ||
| Compatible chain |
HG for 8/7-speed
|
||
| Chainline (mm) | 50 | ||
| P.C.D. (mm) | Riveted | ||
| Gear arms | 4 arm | ||
| Chainring combination | 48-38-28T 42-32-22T |
||
| Q-factor (mm) | 187.9 | ||
|
Crank arm length (mm)
|
165 | - | |
| 167.5 | - | ||
| 170 | X | ||
| 172.5 | - | ||
| 175 | - | ||
| 177.5 | - | ||
| 180 | - | ||
|
Optional chain guard
|
With bash guard | ||
| With chain guard | - | ||
| Without chain / bash guard | X | ||
| HOLLOWTECH II | - | ||
| 2-PIECE CRANKSET | - | ||
| HOLLOWTECH crank arm | - | ||
| OCTALINK | - | ||
| HOLLOWGLIDE | - | ||
|
Compatible BB type
|
Outboard | - | |
| OCTALINK | - | ||
| Square | X | ||
|
Recommended BB
|
Threaded (normal) | BB-UN26 | |
| Threaded (E-type) | - | ||
| Threaded (chain case) | BB-UN26-K | ||
| Pressfit | - | ||
|
Axle length of BB-UN / ES (mm)
|
Threaded (normal) | LL123 | |
| Threaded (E-type) | - | ||
| Threaded (chain case) | LL123-K | ||
|
Threaded BB shell width
|
68mm | X | |
| 73mm | X | ||
| 83mm | - | ||
| Chain case compatible | X | ||
|
Crank arm
|
Material | Aluminum | |
| Finish | Painted | ||
|
Crank axle
|
Material | - | |
| Finish | - | ||
|
Spider arm
|
Material | - | |
| Finish | - | ||
|
Spider arm cover
|
Material | Resin | |
| Finish | Resin | ||
|
Outer ring
|
Material | Steel | |
| Finish | Painted | ||
|
Middle ring
|
Material | Steel | |
| Finish | Painted | ||
|
Inner ring
|
Material | Steel | |
| Finish | Painted | ||
|
Outer / middle ring fixing bolt
|
Material | - | |
| Finish | - | ||
|
Inner ring fixing bolt
|
Material | - | |
| Finish | - | ||
| Stainless chain guard fixing bolt | - | ||
| Crank fixing bolt included | X | ||
| Average Weight (175mm, w/o BB) | - | ||
| Note |
SHIMANO logo
|
||
Hello! Need help? Don’t worry, I’ve got you. Tell me what’s up, and I’ll be happy to assist 💁
