The two cranks, one on each side and usually mounted 180° apart, connect the bottom bracket axle to the pedals.īicycle cranks can vary in length to accommodate different sized riders and different types of cycling. It is connected to the rider by the pedals, to the bicycle frame by the bottom bracket, and to the rear sprocket, cassette or freewheel via the chain. Or chainwheels attached to the cranks, arms, or crankarms to which the pedals attach. It consists of one or more sprockets, also called chainrings The crankset (in the US) or chainset (in the UK), is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear wheel.
A Shimano 105 crankset with two chainrings on a road bicycle A Shimano Deore right crankset, showing crank arm, spider, three chainrings and chainring guard Belt-drive crankset on a Trek District
