Patent ID: 7318494

Claim:
A vehicle comprising: a frame; a slide rail disposed below the frame for guiding a drive track along a road surface; a front suspension arm having a first portion pivotally coupled to the frame at a front frame pivot location and a second portion pivotally coupled to the slide rail at a front rail pivot location; a rear sliding arm having a first portion pivotally coupled to the frame at a rear frame pivot location and a second portion pivotally coupled to the slide rail at a rear rail pivot location; a front shock absorber interposed between the slide rail and the frame; a rear shock absorber interposed between the slide rail and the frame, a linkage system comprising a plurality of linkage members, the linkage system being coupled to the slide rail, the front suspension arm, and the front shock absorber; a spring member having a first portion mounted to the frame and a second portion extending from the first portion generally toward the slide rail; a first spring support member coupled with the slide rail at a first spring support location and arranged to support the second portion of the spring member in a first position; and a second spring support member coupled with the vehicle at a second spring support location and arranged to support the second portion of the spring member in a second position.