Free Style - Ramp, Half-pipe or Flatland. Handle bars that spin,
brakes front and rear, beefy frames and axle pegs. 48 spoke wheels with 14mm
axles. What more could you need? Maybe some trick valve caps.
Dirt Jumping - Looks a lot like a Freestyle, but it's not. Usually
only a rear brake, knobby tires and heavy duty 3-piece cranks. These are the bikes for getting maximum air over the doubles.
Track - Built lighter to be fast! Frames made of Cro-Mo or aluminum,
and 36 spoke wheels. These bikes are designed to get you out of the gate fast and be quick around the curves.
Street - The most basic of BMX bikes. They look a lot like track bikes,
but not as light. Or as expensive.