How fast can I ride with the DRYK DUO? The DRYK DUO can be used with a max. speed of 25 km/h. In combination with a baby lounger with a max. speed of 8 km/h. Related articles From when can I use the DRYK DUO in bike trailer mode? Can the DRYK DUO be coupled to any bike? Are there any rules on how my children should sit when using the DRYK DUO as a double? On which side has my child to sit when using the DRYK DUO as a single? Where can I order a new harness or safety belt?