| The proportion of air to fuel by weight in the mixture drawn into the engine. | |
| A soft bearing alloy used in engine bearing. | |
| 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. | |
| A component located on the brake backing plate, on which the brake shoes rotate and to which the return springs are secured. |