Abstract: A system for adjusting the height or spacing between the frame and axle of a vehicle. The system may operate by manipulating a suspension system connecting the frame to the axle and comprising shock assemblies. The system may include hydraulic spacers selectively changing in length in unison, thereby manipulating the equilibrium positions of the shock assemblies and changing the distance between the frame and axle. Between changes in length, the hydraulic spacers may act as a substantially rigid bodies.

Abstract: A system for adjusting the height or spacing between the frame and axle of a vehicle. The system may operate by manipulating a suspension system connecting the frame to the axle and comprising shock assemblies. The system may include hydraulic spacers selectively changing in length in unison, thereby manipulating the equilibrium positions of the shock assemblies and changing the distance between the frame and axle. Between changes in length, the hydraulic spacers may act as a substantially rigid bodies.

Abstract: A vehicle comprising a frame, a front axle, and a four bar linkage connecting the front axle to the frame. The four bar linkage may define a range of motion of the front axle with respect to the frame. First and second dampers may connect the frame to the front axle over the entire range of motion of the front axle. Third and forth dampers may connect to one of the frame and front axle and engage the other substantially exclusively through a substantial portion of the range of motion of the front axle less than the entirety thereof. So configured, the vehicle may be a hybrid performing well in both high speed travel and low speed, rock-crawling travel.