1. Two pistons
   Two brake pads
2. Two calipers

At the top of the backing plate is a wheel cylinder containing two pistons, one at either end. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/backing-plates.htm">How Backing Plates Work</a>

1. To hold the braking system together
   To control the flow of brake fluid
2. To control the brake pads

The function of backing plates is to hold the braking system together so it can work properly. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/backing-plates.htm">How Backing Plates Work</a>

1. They squeeze the brake pads against the brake rotor
   They control the flow of brake fluid
2. All of the above

Brake calipers are a vital part of your vehicle's braking system. Brake calipers squeeze the brake pads against the surface of the brake rotor to slow or stop the vehicle. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-calipers.htm">How Brake Calipers Work</a>

1. The brake caliper
   The brake pad
2. None of the above

Brake calipers are essential to your car's ability to stop and are arguably one of the most important automobile brake parts. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-calipers.htm">How Brake Calipers Work</a>

1. Drilled
   Slotted
2. None of the above

Most street driven motorcycles come equipped with drilled brake rotors. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. Brake disc
   Brake caliper
2. Brake piston

Brake rotors are also called brake discs. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm">How Brake Rotors Work</a>

1. Cracks
   Leaks
2. Breaking
   All of the above

Flexibility in brakes lines is important because it helps prevent cracks, leaks and breaking. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-line-bends-loops.htm">Why do brake lines have so many bends and loops?</a>

1. They add flexibility
   They add flair
2. They help dissipate heat

They add flexibility. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-line-bends-loops.htm">Why do brake lines have so many bends and loops?</a>

1. DOT3
   DOT4
2. DOT5
   All of the above

<a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/types-of-brake-fluid.htm">What are the different types of brake fluid?</a>

1. 1
   3
2. 5

There are three main types of brake fluid available. <a href="http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/types-of-brake-fluid.htm">What are the different types of brake fluid?</a>