This page holds reference material, pictures and eventually narrative about the Kreidler machines and race efforts. As a starter, some Jan de Vries related archive pictures appear below:

Jan de Vries - Assen Centennial Meeting aboard the 1973 GP winning Kreidler Start of the 1973 50cc Dutch TT at Assen. Jan de Vries is No.21 on the front row. This year saw the second fo his world title victories. The 1969 Kreidler Van Veen race team. No.9 is Rudi Kunz, speed world record holder, No.28 is Jan de Vries world champion 1971/1973 with 14 GP victories to his name and No.17 is Aalt Toersen, 1968 sprint record holder with 6 GP victories to his name Jan de Vries (right) and the team with the championship winning Kreidler in 1973 Jan de Vries - Assen Centennial Meeting aboard the 1973 GP winning Kreidler The 1973 world championship winning Kreidler in detail. This put out almost 20bhp at 16,000 rpm. The 1971 Van Veen Race Team Kreidler which saw Jan de Vries to the first of his world titles after Angel Nieto crashed on the first lap of the final race Detail of the 1975 Van Veen Engine.