Patent ID: 7857325

Claim:
A vehicle comprising: a frame; an axle spaced a distance from the frame; a suspension assembly connecting the axle to the frame, the assembly having a shock absorber and a coil spring coaxially surrounding the shock absorber; a hydraulic system comprising a spacer selectively changing in length, thereby manipulating the suspension assembly and changing the distance between the axle and the frame, the spacer acting, between changes in length, as a substantially rigid body; the spacer further comprising a base and a slide, the base configured as a hollow substantially cylindrical element, the slide having a substantially cylindrical shape and surrounding the base to form an enclosure between the interior of the slide and the exterior of the base, the enclosure being configured to receive hydraulic fluid; and an extension extending from the exterior of the base to slidingly engage the interior of the slide, the extension further comprising a groove for receiving a seal for sealing the interface between the extension and the interior of the slide, the extension being configured to divide the enclosure into a first enclosure portion and a second enclosure portion.