The ICON Vehicle Dynamics S2 Secondary Shock System redefines the off-road capability of the 2016-2023 Toyota Tacoma by allowing for the installation of a secondary shock to an existing ICON coilover setup. The addition of a secondary 2.5 Aluminum Series shock means rougher terrain and larger off-road obstacles can be overcome with confidence as the damping ability of the vehicle’s suspension is effectively doubled. The included ICON CDC Valves are externally adjustable valves that restricts oil flow into the reservoir which creates 10 levels of compression damping force ranges. As opposed to overly complicated and expensive long travel kits, the ICON S2 System is an affordable upgrade that drastically increases off-road performance, is easy to install, and has a modular design that allows 2016-2023 Toyota Tacoma owners to upgrade in steps or all at once.