2025 Chevy Colorado Zr2 Bison Flat Towed. The chevrolet colorado zr2 bison is rejoining the colorado family of midsize trucks for the 2025 model year. The bison gets unique dssv spool valve dampers by multimatic with additional jounce control dampers.
Accelerating, the bison is 0.3 second slower getting up to 60 mph than a standard zr2. Notably, figures are unchanged from the 2023 model year.