SamCo rear coil springs for the rear of an H2 provide approximately 1/2" to 1" of lift for the rear of your H2 Hummer, compared to the factory rear coil springs. They also provide the potential for more wheel travel, as they were designed for pre runners and race H2's. The springs have a 2.5" longer free length, but less spring rate than the factory springs to provide a ride quality similar to the factory air bag suspension. The additional free length would allow for about 20% more wheel travel with the use of longer shocks and refabricated shock mounts. Sold in pairs.