Length arm Crankset. The
length of the arm crankset depends on the length of the foot, specifically if the length of the foot is less than 74cm.
use crankset 165mm,
74cm - 82cm. using 170mm, 83cm - 86cm.
172.5mm and larger
than 87cm. 175mm. The length of crankset
measured from the center to the bolt axis in the center of the
pedal hole. Always sizing is engraved
onto crankset 170mm,
172,5 mm and 175mm.