The 2018 Chevrolet Colorado is a midsize pickup offered in extended-cab and crew-cab body styles. There are two bed lengths and five trim levels: Base, Work Truck (WT), LT, Z71 and ZR2. The ZR2 model features significant suspension and body changes that give it improved off-road capability. For more ability off the beaten path, the ZR2 is your truck. The ZR2 has a raised suspension with special dampers, bigger all-terrain tires, fender flares, special bodywork for improved approach and departure angles, a spray-in bedliner (optional on other trims) and an electronically locking rear differential.