Bicycle handlebar a steep U-shape from the base, so that the rider's hands rest above waist-level. This style of bicycle handlebar became very popular in the 1960s after the introduction of wheelie bikes such as the Schwinn "Sting-Ray", Raleigh Chopper, and other highly stylized youth bicycles that imitated the appearance of drag-racing or chopper motorcycles of the day. Legislation in the United States introduced during the 1970s limited the maximum height of manufacturer-installed handlebars to 16 inches above the lowest seat setting; European Union safety regulations use a similar limit of 400mm. The apehanger style remained common in the US through the
Electra Bicycle Company inspired by the Southern California hot rod "kustom kar" culture. The lines of the bike frames became more exaggerated, chrome plating was applied liberally, and paint jobs became much more elaborate with flames, metal flakes, and wild colors. "Chopper" style elements like shortened rear fenders, racing "slik" tires, and elongated forks were introduced. Models carried hot-rod names like "Rockabilly Boogy" or "Rat Rod". The company even offered balloon tires with flame-patterned tread. In a more explicit tribute to the car culture, Electra brought out a "Rat Fink" model, licensed by the estate of legendary hot-rodder 'Big Daddy" Ed Roth. "We