A method and apparatus for a suspension comprising a spring having a threaded member at a first end for providing axial movement to the spring as the spring is rotated and the threaded member moves relative to a second component. In one embodiment, the system includes a damper for metering fluid through a piston and a rotatable spring member coaxially disposed around the damper and rotatable relative to the damper.

The twist axle assembly includes a cross beam that extends along a length between opposite ends, and a pair of trailing arms are fixedly attached with the opposite ends. A spindle plate is fixedly attached with each of the trailing arms. For each spindle plate and trailing arm combination, the spindle plate and trailing arm are provided with cooperating orbital adjustment features which allow an orientation of the spindle plate relative to the trailing arm to be adjusted prior to the spindle plate being fixedly attached with the trailing arm for allowing preselection of a camber angle, a caster angle, and a toe angle for a wheel to be coupled with the spindle plate.

A motor-vehicle wheel support unit includes a first base body provided with attachments for connection to arms of a motor-vehicle suspension, and a second body for rotatably supporting a wheel hub, which is separate with respect to the first base body and is secured to the first base body in one of two different selectable mounting positions, which correspond to two different vertical positions, with reference to a condition of use, of an axis of the wheel hub with respect to the first base body. In this manner, a height of the vehicle from the ground can be modified by simply mounting said second body on the first body in one or the other of the two mounting positions. In each of the two mounting positions, the second body is rotated by 180° around an axis parallel to the wheel hub axis with respect to the other mounting position.

A bracket assembly for a multi-link suspension system is provided, said bracket assembly mounted to a housing of an automotive vehicle, as opposed to a chassis of the automotive vehicle, enabling modularity and ease of replacement of the housing and adjustability of suspensions system components. The bracket assembly may have a body, wherein the body includes: an axle tube hole; one or more cross tube support holes; at least one trailing arm attachment portion having a first plurality of adjustment holes and a second plurality of adjustment holes; an anti-roll bar attachment portion having one or more attachment holes; and a shock attachment portion having a plurality of attachment holes. Further, the bracket assembly may include one or more engagement points, configured to support a number of said suspension system components, such as at least one trailing arm, an anti-roll bar, a shock absorber coupler, and a shock absorber.

An adjustable spring mounting assembly includes an adjustment plate, including a receiver, an elongated axle alignment slot and at least one height adjustment aperture, and an alignment correction insert received and held in said receiver. The alignment correction insert includes a plurality of alignment correction apertures wherein a selected one of the plurality of alignment apertures is aligned with the elongated axle alignment slot to correct axle alignment of the vehicle.

A utility vehicle includes a frame, a first ground-engaging element coupled to a first portion of the frame, a second ground-engaging element coupled to a second portion of the frame, an operator platform supported by the frame, and a suspension system coupled between the operator platform and the frame to accommodate motion of the frame relative to the operator platform. The suspension system includes a first linkage assembly coupled to the operator platform and operable to accommodate motion of the second portion of the frame relative to the operator platform and a second linkage assembly having a first end coupled to the frame to secure the suspension system to the frame and a second end coupled to the first linkage assembly. The second linkage assembly being operable independent of the first linkage assembly to accommodate motion of the first portion of the frame relative to the operator platform.

Example apparatuses and techniques have been presented for towing tracked vehicles at high speeds without various deficiencies and for allowing a vehicle to be configured to extend supplemental wheels from a storage configuration into a ground support configuration in which the vehicle is able to make use of the supplemental wheels for additional ground support.

A bracket assembly for a multi-link suspension system is provided, said bracket assembly mounted to a housing of an automotive vehicle, as opposed to a chassis of the automotive vehicle, enabling modularity and ease of replacement of the housing and adjustability of suspensions system components. The bracket assembly may have a body, wherein the body includes: an axle tube hole; one or more cross tube support holes; at least one trailing arm attachment portion having a first plurality of adjustment holes and a second plurality of adjustment holes; an anti-roll bar attachment portion having one or more attachment holes; and a shock attachment portion having a plurality of attachment holes. Further, the bracket assembly may include one or more engagement points, configured to support a number of said suspension system components, such as at least one trailing arm, an anti-roll bar, a shock absorber coupler, and a shock absorber.

A suspension assembly for a vehicle may include a wheel support structure operably coupling a wheel to the suspension assembly, a bolt-in spring seat bracket operably coupled to the wheel support structure, and a spring supported by the bolt-in spring seat bracket and disposed between a chassis of the vehicle and the bolt-in spring bracket. The bolt-in spring seat bracket may be adjustable to change a ride height of the vehicle.

A roll stabilizer for a motor vehicle includes a torsion bar and a vibration damper located on the torsion bar. The vibration damper is configured to vibrate relative to the torsion bar. The vibration damper includes two half-shells formed together about the torsion bar. Damper elements are disposed between the half-shells. The damper elements can be adjusted via an adjustment component to alter the rigidity of the damper elements.