- 12
- 165 / 170 / 175
- 57.9
Specifications
As listed in the manufacturer's catalog.
General
- Series
- ZEE
- Model no.
- FC-M645
- Color / 1
- Series color
- Rear speeds
- 10
- Compatible chain
- HG-X 10-speed
- Chain line (mm)
- 57.9
- P.C.D. (mm)
- 104
- Spider/gear arms
- 4
- Chainring combination
- 34T, 36T, 38T (FC-M640/M645 chainring)
- Q-factor (mm)
- 189.7
- Optional chain guard / Without chain/bash guard
- Yes
- 2-PIECE CRANKSET
- Yes
- Compatible bottom bracket type / Outboard
- Yes
- Threaded bottom bracket shell width (mm) / 83
- Yes
- Outer/middle ring fixing bolt / Material
- Stainless steel
- Crank fixing screw included
- Yes
- Average weight (g) (170 mm, w/o bottom bracket)
-
- Note
- For 83 mm bottom bracket shell width
O.L.D.
- Thru (mm) / 157
- Yes
- Thru (mm) / 150
- Yes
Crank arm length (mm)
- 165
- Yes
- 170
- Yes
- 175
- Yes
Recommended bottom bracket
- Threaded (normal)
- BB-MT501
- Threaded (E-type)
- SM-BB52
- Press-Fit
- SM-BB71-41C
Crank arm
- Material
- Aluminum
- Finish
- Painted
Crank axle
- Material
- Steel
- Finish
- Plated
Middle ring
- Material
- Aluminum
- Finish
- Anodized
How spec sheets write it
The most common ways bicycle spec sheets name it, by number of mentions.
-
Shimano Zee FC-M645, 165mm
-
Shimano Zee FC-M645, 165mm, 34t
-
Shimano Zee M645, alloy, reinforced steel axle, 165mm length
-
Shimano Zee M645, 165mm length
Bicycles
Published bicycles that use it, newest model years first.
