When he came to California in the 1970s, Berg worked a stint at Ricky Racer, a shop which sold Laverdas and was very involved in roadracing, a sport which captured Berg's interest for a few years. He made his first splash in the custom-bike world when he moved to White Brothers, where he started doing suspension-development work. That took him to the company's R&D; department, where he started creating products for the Harley market, which was then a new market for the Whites. The White Brothers' Porker Pipes are the best known example of the products he developed for them, though there are many others. In the late 1980s, Berg went into business for himself, opening Time Machine with a partner. Though he went back to White Brothers for a time, he ultimately returned to Time Machine, this time by himself.