| Air injection reaction system | |
| A brake caliper design that contains one or two pistons positioned on either side of the rotor. C The caliper. Is rigidly attached to the spindle and the pads or applied with equal hydraulic pressure from both sides. | |
| The casting that contains the valves and valve springs, and covers the top of the cylinders. | |
| The conditions that exist in a working electrical current. A current that is unbroken, not open. |