The parts of a bike that work together as a subsystem are:
• The Wheel
• Drivers & Gears
• Frames & Materials
• Brakes & Steering
• Aerodynamics
• Human Power
When the pedals on a bicycle move, they turn the gear. When the gear turns, it moves the chain. The moving chain makes the back wheel turn – and that pushes the bicycle forward. ... The handlebars, frame, and front-wheel all work together for steering.