A steering and suspension mechanism for a motorbike, scooter, bicycle, skateboard or other two wheeled, in-line, vehicle, incorporating a steering axis rake that is inclined to the vertical, in a direction that is upwards and forwards from the ground in the normal direction of travel, together with a trailing radial arm suspension, in combination. Steering may be effected via a push rod attached to the handlebars, which in turn pivot on the main chassis. A brake calliper may be pivoted on the wheel axle, with a link to the steering head assembly to prevent rotation of the calliper with the brake disc under braking. This link may be parallel or nearly parallel to the radial arm. The exact angle can be chosen to control ‘dive’ due to weight shift under braking.