Tundra's coil spring rear has a comfortable, but soft spring rate. Is your rear end sagging? Is it hanging low from the added weight of an off-road rear bumper, toolbox, bed rack or other overland accessories?. Skyjacker has a solution. Rear coil spring Metal Spacers fit into the OEM upper spring mount to gain a better stance and function perfectly with the Tundra's factory coil springs. The strong tab-and-slot interlocked design of the rear 1-piece coil spring spacers integrate smoothly and function perfectly with the Tundra's OEM Coil Springs. These spacers raise the rear by 1-inch. All steel metal construction (0.1875mm - 3/16 in.) with modern exact CNC laser cuts, CNC bends and breaks, CNC machining and expert welds. They are powder coated to provide an extremely durable protective barrier to prevent corrosion. Comes complete with quality grade mounting hardware.