Bicycles

1. BMX Bikes

1.1. BMX bikes don't normally have shocks

1.2. BMX Bikes are for doing tricks

1.3. BMX bikes can have pegs on the sides to grind on rails

2. Mountain Bikes

2.1. Mountain Bikes are for riding in the mountains down bike trails.

2.2. Mountain bikes have shocks for when you ride off of stuff so it can cushion you landing

2.3. Mountain biking can be dangerous depends on the types of trails you ride

3. Bike Frames

3.1. Some are made of titanium, aluminum, and carbon fiber

3.2. You can get custom paint jobs on frames or paint your own

3.3. Your bike frame could look different than someone else's

4. Bike Wheels

4.1. You can have a different number of spikes

4.2. You can get different tires that have different tread

4.3. Your tire can be in different sizes to work with your height