When it comes to bang for the buck, Shimano's Zee components — like
this 68/73mm bottom bracket-compatible Zee FC-M640 Crankset — are hard
to beat. Thick-walled aluminum construction with a reinforced steel axle
ensures flex and failure are absent from your ride.
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-M640 does not include a bottom
bracket, and it comes in three lengths: 165, 170, and 175mm.
- Thick-walled aluminum crank arms
- Steel spindle
- 104 BCD
- Bottom bracket not included