21 SPEED BIKE GEARS - 21 SPEED

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21 Speed Bike Gears

speed bike


A racing bicycle, commonly known as a road bike, is a bicycle designed for road cycling according to the rules of the Union Cycliste Internationale (UCI). The UCI rules were altered in 1934 to exclude recumbent bicycles.

gears


One of a set of toothed wheels that work together to alter the relation between the speed of a driving mechanism (such as the engine of a vehicle or the crank of a bicycle) and the speed of the driven parts (the wheels)


A particular function or state of adjustment of engaged gears


(gear) a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion


(gear) a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle)


Equipment that is used for a particular purpose


(gear) set the level or character of; "She pitched her speech to the teenagers in the audience"

21


21 is a 2008 drama film from Columbia Pictures. It is directed by Australian director Robert Luketic and stars Kevin Spacey, Laurence Fishburne, Kate Bosworth, Liza Lapira, Jim Sturgess, Jacob Pitts, and Aaron Yoo.


twenty-one: the cardinal number that is the sum of twenty and one


Year 21 (XXI) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar.