The front wheels are compatible only with v3 chassis models. To determine if you have a v3 chassis, please refer to the second photo above and examine the front of the chassis. Unlike the v2 models, the front v3 chassis wheels do not feature a splash guard.
The quick-release wheels have non-puncture PU tyres for stress and maintenance free travel. Effortless manoeuvrability is achieved by the technological refinement of having 360° rotating front wheels with reduced vibrations.