Cleat
This attaches to the bottom of a cycling shoe, and allows a rider to lock into the pedal mechanism. This allows a rider to quickly disengage his foot from the bike by simply twisting his heel Top
Clipless Pedal
This pedal allows a rider, wearing a cleat, to easily lock and unlock his foot from a pedal, so that his foot won't come off the pedal whilst cycling, but he can take his foot off quickly and easily if he needs to Top
Fork
The fork is the part of the bike that connects the frame to the bike. They are attached to either side of the centre of the front wheel to allow for steering and balance.
Handlebar
This is found on the front of a bike, and is used to steer it. Riders rotate the bars clockwise to go left, and anti-clockwise to go right. Handlebars also carry the brake lever and gear changers
Wheel
These are found on the front and rear of the bike, and allow the bike to move. They are linked to the pedals, which make them turn. Compared to wheels found on other bikes, they are extremely thin