- Air boxes (i.e. - on a Kawasaki VN750 or VN1500A or any Virago)

Eat Asphalt - Crash

Econo-box, cage, dresser - Car

ECM - Electronic Control Module - The computer brain that controls various aspects of your motorcycle's performance including ignition, timing, and fuel to air ratio.

EFI - Electronic Fuel Injection

Eighty Six (86) - If someone is 86 they are cut off. for example If you are 86 from alcohol in public places they are not allowed to drink in public. Some are 86 from club functions.Ol'ladies sometimes get 86 from club functions.

Endo - The art of stopping a motorcycle and having the rear wheel lift off the ground, a reverse of the catwalk. Also called a stoppie. Going back over front.

Enduro - Typically this category includes cross bikes which are tuned and equipped for driving on the roads. These bikes are often heavier than, and not as extreme as cross motorcycles, though not as heavy and well-equipped as the larger off-roaders.

Engine Guards - Metal tubes bolted to the motorcycle's frame that should protect the engine from damage in the event of an accident. They are not designed to offer the rider or passenger any protection in the event of an accident.

ESAD - Eat Shit And Die

Evo - Evolution - The Evolution engine (V-Twin, produced from 1984 - 2000)

Excessive 11 (Xcess 11) - SX1100, a 1100 cc 4 cylinder street bike.

Exhaust System - Pipes

Expanding brake - Device operated by a handle or pedal to slow down or stop the bike. A cylinder is attached to the relevant wheel. Inside there are two so-called brake shoes, which are pushed outwards against the inner walls of the cylinder, thus slowing the bike down.