[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
|