A caster angle adjustment device for a vehicle includes a variable lower arm connected to multiple points of a subframe via connection parts and connected to a steering knuckle at a single point via one of the connection pails, any one of the connection pails connected to the subframe being movably connected to the subframe to be changed in shape, and an actuator provided in the subframe and connected to the connection part movably connected to the subframe and configured to move a position of the connection part, so that a position of the steering knuckle is moved through the shape change of the variable lower arm to change a caster angle.

Embodiments relate to an off-road vehicle comprising a frame, including at least one cargo box support member, a suspension movably coupled to the frame, a passenger compartment, an engine, a transmission operatively coupled to the engine, and a cargo box. The cargo box includes a floor and a plurality of upwardly extending sidewalls, wherein at least a portion of the cargo box floor extends over the at least one cargo box support member and wherein the cargo box is removably coupled to the at least one cargo box support members and is removable from the off-road vehicle via the removal of fewer than eight fasteners.

Disclosed is a wheel carrier for a suspension of a motor vehicle; and a motor vehicle comprising the wheel carrier. In a preferred system, the wheel carrier comprises a first carrier segment configured to carry a wheel of the motor vehicle at a wheel center; and a second carrier segment configured to couple the first carrier segment with a vehicle body of the motor vehicle. The second carrier segment comprises at least one groove, and the first carrier segment comprises for each groove a corresponding sliding pin configured to slidingly engage the respective groove such that the pin slides along the groove under vertical and/or horizontal displacements of the wheel center with respect to the second carrier segment.

Transportation vehicles, suspension systems and related methods are provided herein. For example, a three wheeled vehicle is provided that can include a frame having a first side and second side and a front end and a rear end and a steerable front wheel secured to the front end of the frame. The vehicle can also include a first trailing wheel arm having a first rear wheel secure thereto and a second trailing wheel arm having a second rear wheel secure thereto. The vehicle can also include a central suspension joint secured to the frame on which the first trailing wheel arm is rotatably secured and the second trailing wheel arm is rotatably secured on either side of the frame. Further, the vehicle can include a horizontal linkage having a first end and a second end and a midsection between the first and second ends. The horizontal linkage can be pivotably connected to a pintle on the frame at the midsection beneath the first and second trailing wheel arms with the horizontal linkage linked to an underside of the first trailing wheel arm between the first wheel and the central suspension joint proximal to the first end of the horizontal linkage and linked to an underside of the second trailing wheel arm between the second wheel and the central suspension joint proximal to the second end of the horizontal linkage.

An adjustable floating traction bar is disclosed. The traction bar comprises a rigid body having a threaded portion on a first distal end to receive a threaded eyelet having a spherical joint to provide a connection point to an axle of a vehicle. The traction bar further comprises an opposing distal slip end being machined and fitted with a UHMW (ultra high molecular weight) polyethylene bushing that acts as a slip-joint the slip joint having a first end that mounts to the UHMW polyethylene bushing of the tubular body and an opposing end having an eyelet to provide a connection point to a vehicle frame. A two-stage nested coil spring located inside the slip end of the rigid body that rests against the slip joint end when it is inserted into rigid body. .

A relative guide device (1) for a steering arrangement (31) is arranged on the wheel-carrier side for the spatial guidance and maintenance of the relative spatial orientation of the steering arrangement (31) with respect to a vehicle body (40). At least one telescopic movement apparatus (2) for movably connecting the steering arrangement (31) is arranged on the wheel-carrier side to the vehicle body (40). A steering force transmission device (30) transmits a steering force to a wheel (R) of a vehicle having a relative guide device (1), and to a wheel suspension (50) for a vehicle.

A mobile drive unit includes a pivot between the front chassis unit and the rear chassis unit, thereby diminishing the total height of the unit.

A multi-functional off-road vehicle has a frame which includes a left lateral frame member and a right lateral frame member. The two frame members are connected by a crossbar. Four wheel assemblies are connected to the frame. At least two of the wheel assemblies are continuous tracks. The crossbar includes a track width adjustment actuator which extends and contracts a length of the crossbar and thereby changes a track width of the vehicle.

A suspension link, such as a control arm, has a detachable ball joint end which attaches to a ball joint connected to the wheel hub of a vehicle. The detachable ball joint end also attaches to a housing member of an opposite facing intermediate portion of the suspension link. There is an adjustable set off between opposite facing surfaces of the detachable ball joint end and the housing member. Adjustments in the set off, which adjust the camber of the vehicle wheel, may be made by placing one or more shims between the detachable ball joint end and the bolt housing.

An adjustable floating traction bar is disclosed. The traction bar comprises a rigid body having a threaded portion on a first distal end to receive a threaded eyelet having a spherical joint to provide a connection point to an axle of a vehicle. The traction bar further comprises an opposing distal slip end being machined and fitted with a UHMW (ultra high molecular weight) polyethylene bushing that acts as a slip-joint the slip joint having a first end that mounts to the UHMW polyethylene bushing of the tubular body and an opposing end having an eyelet to provide a connection point to a vehicle frame. A two-stage nested coil spring located inside the slip end of the rigid body that rests against the slip joint end when it is inserted into rigid body.