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Shimano
ZEE FC-M645 Crankset

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ZEE FC-M645 Crankset

When it comes to bang for the buck, Shimano's Zee components — like this 83mm bottom bracket-compatible Zee FC-M645 Crankset — are hard to beat. Thick-walled aluminum construction with a reinforced steel axle ensures flex and failure are absent from gravity-fueled runs.


These two-piece cranks are 10-speed only and come with a 36t chainring. For added durability, Shimano gives the Zee cranks steel pedal inserts. The drive-side arm has a 104mm BCD, and it uses alloy chainring bolts. Shimano's Zee FC-M645 does not include a bottom bracket, and it comes in three lengths: 165, 170, and 175mm.


Arm Material
aluminum
Arm Length
165 mm 170 mm, 175 mm
Chainring Sizes
36 t
Bolt Circle Diameter
104 mm
Bottom Bracket
not included
BB Type
external, press fit
Bolts
alloy
Rings
1
Spindle
steel
Compatible Components
83mm BB shell
Recommended Use
cycling

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