Shimano FC-M311 Altus Crankset - 3x7/8 Speed

  • Chainring BCD: Riveted
  • Hyperdrive SG-X chainrings
  • Spindle Interface Type: Square Taper JIS
  • BB Included: No
  • Chain Compatibility: 3/32"
  • Crank-FD Type: Mountain Triple
  • Color: Black
  • Recommended BB Spindle Length: 123mm
  • Pedal Spindle: 9/16"
  • Rings: 22/32/42 for 7/8 Speed
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
Q-factor (mm) 187.9
Crank arm length (mm) 165.0 -
167.5 -
170.0 X
172.5 -
175.0 X
177.5 -
180.0 -
Optional chain guard With bash guard -
With chain guard X
Without chain / bash guard X
HOLLOWTECH crank arm -
Compatible BB type Outboard -
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

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