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 (38T) 817 (36T) 807 (34T)

2-PIECE CRANKSET	✔
Chain line (mm)	50.4
Chainring combination	38T, 36T, 34T (FC-M640/M645 chainring)
Compatible bottom bracket type_Outboard	✔
Compatible chain	HG-X 10-speed
Crank fixing bolt included	✔
Crank arm length (mm)_165	✔
Crank arm length (mm)_170	✔
Crank arm length (mm)_175	✔
Spider/Gear arms	4
Optional chain guard_Without chain/bash guard	✔
P.C.D. (mm)	104
Rear speeds	10
Recommended bottom bracket_Press-fit	SM-BB71-41A
Recommended bottom bracket_Threaded (E-type)	SM-BB52
Recommended bottom bracket_Threaded (normal)	SM-BB52
Threaded bottom bracket shell width (mm)_68	✔
Threaded bottom bracket shell width (mm)_73	✔
Crank arm fixing bolt_With	✔
Q-factor (mm)	174.7
Chain line (mm)	50.4
Compatible chain	HG-X 10-speed
P.C.D. (mm)	104
Rear speeds	10
O.L.D._QR/Nut (mm)	135
O.L.D._Thru (mm)	142