Kettler AluRad 2600. Kettler was one of first companies to introduce bicycle frames made completely of aluminium. They started as early as 1979 with their AluRad 2600 model. Now Alurad is considered to be a milestone in bicycle history, and so Kettler decided to celebrate its 30th anniversary with a remake: a short series of Alurad 2006 was built in 2009.