A caster having a four bar suspension configured for use with a wheelchair includes a caster wheel supported for rotation by a caster fork. The caster fork forms one link of the four bar suspension and is pivotally connected to an upper link. The upper link is pivotally mounted to and generally coaxially disposed about a caster stem housing. A lower link pivotally mounted to the caster stem housing and the caster fork. A resilient member is disposed between the caster stem housing and the lower link.
