Each time a tire is raised to operating temperature is a heat cycle.

Either the upper or lower connecting suspension piece (in the shape of an A) locking the frame to the spindle.

Housing for the air cleaner that connects the air intake at the base of the windshield to the carburetor.

Paper, gauze, or synthetic fiber element used to prevent dirt particles from entering the engine. Located in the air box.

A belt-driven device mounted on the front of the engine that recharges the battery while the engine is running.

The paved portion of a racetrack that separates the racing surface from the (usually unpaved) infield.

The sloping of a racetrack, particularly at a curve or corner, from the apron to the outside wall. Degree of banking refers to the height of a track’s slope at its outside edge.

A cover, shaped like a bell, that surrounds the flywheel and clutch that connects the engine to the transmission.

Slang term for a race car’s brakes.

A valve in the wheel used to reduce air pressure in tires.