A self-propelled, one-wheeled vehicle may include a suspension system configured to dampen up and down motion of a board relative to the axle of a central wheel assembly when the vehicle encounters obstacles and bumps on a riding surface. Illustrative suspension systems include a shock absorber, a rocker, a pushrod, bell cranks, and/or a swingarm that couple the axle to the board. The suspension system may be disposed completely below a foot deck of the vehicle.

A suspension system for skateboards that provides a low profile, high strength suspension system to support a typical roller skate which incorporates one independent and/or offset style suspension and one offset style suspension which includes a flat plate next to a cover with apertures; two support posts secured and configured perpendicularly to the flat plate, where each post has either a drive stud at one end and an aperture and bearing at an opposite end to the flat plate and drive stud; a torsion arm with a socket to connect to the drive stud; and a hub base that encircles the torsion arm opposite the socket which secures the hub base to the torsion arm while the hub base is removably secured to a stub shaft; a way to attach the flat plate and a second way for removably connecting the cover to the skate base plate.

An inline skate frame may comprise a frame body. A plurality of rocker arms may be rotatably attached to the frame body. The rocker arms may be configured to support wheels. A plurality of biasing members may be positionable between opposing rocker arms. A plurality of stop pins may be selectively insertable through the frame body and biasing members. The frame may be configurable between multiple configurations. In a first suspension configuration, the stop pins may be inserted to independently bias each rocker arm against the frame body. In a second suspension configuration, the stop pins may be removed to bias opposing rocker arms against each other. In a no-suspension configuration, the biasing members may be replaced with non-elastomeric plugs. The rocker arms may be rotatably attached to the frame body by pivot axles. The biasing members may comprise elastomeric springs. The elastomeric springs may have a hole or hollow tube running lengthwise through their center. The frame body and rocker arms may be configured to use reversible hardware. The frame may comprise four rocker arms. The four rocker arms may comprise two pairs of identical rocker arms for supporting wheels of different diameters. Upward and downward rotation of the rocker arms may be limited by stops on the rocker arms and within the frame body. The frame may be configurable with different suspension configurations for different pairs of rocker arms within the same frame.