Creating a dedicated rock-crawling machine?. We have you covered with Rancho custom long-travel coil-overs, reinforced body components, and accessories. 2004-2012 Chevrolet Colorado (Rear) (Front Spring: Torsion Bar / Qualifier: with Rancho Suspension System, with Rear Raised Height 2.5 (in), without Rear Aluminum Driveshaft); 2004-2012 GMC Canyon (Rear) (Front Spring: Torsion Bar / Qualifier: with Rancho Suspension System, with Rear Raised Height 2.5 (in), without Rear Aluminum Driveshaft).