The ICON Vehicle Dynamics Progressive Add - A - Leaf kit is a great way to lift the rear of your 1996 - 2023 Toyota Tacoma or 2000 - 2006 Toyota Tundra while also improving rear end ride quality. Installing in place of the factory overload leaves, this kit effectively lowers the rear spring rate by approximately 10 for a more compliant ride. This three - leaf progressive rate Add - A - Leaf Kit comes complete with U - bolts and center pins for an easy install. This kit will give your Tacoma or Tundra 1.5 inches of lift after installation. Simply remove the factory overload spring, bolt up the kits, and say goodbye to that rough factory ride.