15-22 Colorado/Canyon 5.5 Inch Suspension With Nitro Shocks Zone OffroadTo properly lift the Colorado Canyon suspension 5. 5 Inch, we started with ductile cast iron steering knuckles that reposition critical steering and control arm mounting locations, and work in harmony with the heavy duty, fabricated crossmembers. Differential drop brackets lower and reposition the front differential for correct CV shaft angles and still allow for use of the factory front driveshaft with the help of a spacer that helps retain optimum