SHIMANO FC-M5100 LEFT HAND CRANK ARM 170mm

SHIMANO Deore FC-M5100-1 Crankset Left Hand Crank Arm Unit

This is an "A" match which indicates that the parts are the same in materials, appearance, finish and size etc.

FC-M4100-2
The following are a "B" match which indicates that the parts are usable, but differ in materials, appearance, finish, size etc.

FC-M7000-1
FC-M6000-2
Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.