By the early 1960s there was a big enough contingent of people modifying motorcycles, still mostly big Harley-Davidsons, that a certain style had begun to take hold. A set of modifications became common: the fat tires and 16" wheels of the stock motorcycles were replaced with narrower tires often on a larger 19" or 21" wheel. Forward-mounted foot pegs replaced the standard large 'floorboard' foot rests. Frequently the standard headlight and fuel tank were replaced with much smaller ones. Often upgraded chromed parts (either one-off fabricated replacements or manually chromed stock parts) were added. It is in this era that what we would today consider a chopper came into existence and began to be called the chopper.