V-Four - A four cylinder motorcycle engine with the cylinders arranged in two rows in an angled V. (e.g. Yamaha V Max has a 1200cc V-4 engine)
V-Twin - A 2 cylinder motorcycle engine with the cylinders arranged in an angled V This configuration can allow for optimum torque for a given displacement.
V8 - Vulcan 800 (any Model any year)
Valanced - Refers to the larger sweeping fenders.
Valve - A device that regulates the passage of fuel through into an engine cylinder. More specifically, a valve is a mechanical device that controls the entry of fuel/air mixture into a combustion chamber, as well as the exit of spent combustion gases from the same.
Vermatherm Valve - Temperature adjusted oil pressure control valve used to control hydraulic fan speed.
VIN - Vehicle Identification Number
VROC - Vulcan Riders and Owners Club
V Rod - Yamaha V Max (Any Model, any year). Also called "Mr Max". Not to be confused with the Harley Davidson model V-Rod