2007 - Current Toyota Tundra Rear Expansion Pack. unlike traditional add-a-leafs that obtain lift height at the cost of stiffening ride quality this new full length expansion pack replaces all the factory leafs except the main and overload. This allows us to modify the spring rate to increase ride comfort, obtain lift height, still maintain load and towing capacities and increase wheel travel. By obtaining the factory main leaf installation is a snap.
