actuator

arm

armar

bicicleta

bicycle

bike

cam

chain

chrome

close

cogs

cycling

dirty

disk

drive

fiets

frame

freewheel

gear

gearbox

gears

linkage

mechanism

metal

motion

mountain

mtb

pads

pedal

point

ratchet

rotor

shift

shiny

slow

speed

spokes

springs

sprocket

steel

tire

tooth

transmission

trapper

tyre

video

view

wheel