Building on the new Silverado ZR2, Chevrolet and American Expedition Vehicles are releasing the uprated Silverado ZR2 Bison. The ZR2's 6.2-liter, 420 horsepower V8, 10-speed automatic transmission, and Multimatic DSSV spool-valve dampers carry over unchanged. AEV adds stamped steel front and rear bumpers, five bespoke boron steel skidplates that are five times stronger than the ZR2's standard plates, and gloss black 18-inch AEV wheels with 33-inch Goodyear offroad tires. Front and rear departure angles have been increased, while the suspension tune is specific to the ZR2 Bison. Inside, the seats feature AEV stitching and logos throughout the cabin and all-weather floor liners. The Silverado ZR2 Bison will start production in early 2023.