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Glossary of Automotive Terminology

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Glossary of automotive, recreational vehicle and motorcycle terminology.

Starter

The starter is an electric motor that consists of several brushes. These brushes carry electrical current that allows the motor to spin and therefore turns over the engine. Read More »

Independent Suspension

Most early cars used a rear axle that was one unit, solidly linking both rear wheels, the differential and brake assemblies. Sports car competition showed that if the wheel assemblies can be made lighter, including brakes, hubs and axle parts, the car will ride and handle better. As a result, manufacturers have unlinked the wheel assemblies using jointed axles so ... Read More »

Independent Suspension

Most early cars used a rear axle that was one unit, solidly linking both rear wheels, the differential and brake assemblies. Sports car competition showed that if the wheel assemblies can be made lighter, including brakes, hubs and axle parts, the car will ride and handle better. As a result, manufacturers have unlinked the wheel assemblies using jointed axles so ... Read More »

Inter-cooler

The inter-cooler chills each specific charge of incoming air before it reaches the turbo-charger. Cooling the air increases the air density but also the amount of oxygen in the air. More oxygen condensed into a specific quantity of air enriches the mixture of oxygen and fuel that’s required for combustion and ultimately generates more power with each cycle of ignition. ... Read More »

Wind Drag

Wind drag is simply the amount of force a ride feels from the wind. If the rider sits upright and is broad, the wind drag is going to greater than it would be for a narrow rider, and even greater than it would be for a rider who “crouches” or tries to fit behind the handlebars. A windshield helps reduce ... Read More »

Autocross

A timed competition of low-to-medium speed driving, with one driver at a time navigating a small course defined by traffic cones. Drivers compete against one another for the fastest timed lap (sometimes multiple laps) through the course. Read More »

Brake Piston

Pressure from the brake lever (when squeezed) forces the brake fluid to flow from the master cylinder down through the brake line and into the caliper. The pressure of the brake fluid causes the piston to push the brake pad to rub against the disc, thus stopping movement of the motorcycle. Read More »

Cat-Back Performance Exhaust

An exhaust system upgrade which consists of new pipes from the [catalytic converter] to the tail pipe which increases horsepower. These new pipes are larger, thus, more exhaust can exit the system. The faster the exhaust can exit, the more horsepower you gain. Read More »

Cruiser Bag

A flat rectangular-shaped bag with a long strap. They are slung over the head and one shoulder. Sometimes called a courier bag because they were originally made for motorcycle and bicycle couriers. Read More »

Chassis Cab

A truck with a cab but no bed. Different bodies — utility bodies, ambulance bodies, flat beds, etc. – are fitted to these trucks by aftermarket suppliers. Read More »