SHIMANO ZEE MTB Crankset 1x10-speed

FC-M640

STD
FC-M640

FC-M640

ZEE - MTB Crankset - 1x10-speed

The ZEE FC-M640 crank is designed for the rigors of gravity riding with thick-wall 2-piece cranks, a strong, steel axle, and steel pedal inserts. Chainrings include 34, 36, and 38T.

Strong thick-wall 2pcs-crank arm
Strong steel axle
Steel pedal insert
Choices of spec
FC-M640 68/73mm bottom bracket
FC-M645 83mm bottom bracket
Press-Fit bottom bracket compatible
34T/36T/38T
Weight: 906g (FC-M640, 36T, 170mm, without bash guard) 938g (FC-M645, 36T, 170mm, without bash guard)

TECHNOLOGIES

PRODUCT SPECIFICATIONS

MODEL NO	FC-M640
SERIES	ZEE M640 Series
Color	Series color
Average weight	828 g (38T), 817 g (36T), 807 g (34T)

2-piece crank construction	✔
Chain line (mm)	50.4
Chain ring combination	38T, 36T, 34T (FC-M640/M645 chainring)
Compatible BB type_Outboard	✔
Compatible chain	HG-X 10-speed
Crank fixing bolt included	✔
Crank arm length (mm)_165.0	✔
Crank arm length (mm)_170.0	✔
Crank arm length (mm)_175.0	✔
Gear arms	4 arm
Optional chain guard_Without chain / bash guard	✔
P.C.D. (mm)	104
Rear speeds	10
Recommended BB_Pressfit	SM-BB71-41A
Recommended BB_Threaded (E-type)	SM-BB52
Recommended BB_Threaded (normal)	SM-BB52
Threaded BB shell width_68mm	✔
Threaded BB shell width_73mm	✔
Crank arm fixing bolt_With	✔
Q-factor (mm)	174.7