Review on Firestone 2600 Helper Spring Kit by Charles Collier

Assembled and installed very well using conventional mechanical tools. If you are NOT mechanical by nature, I highly recommend going to a specialty shop for installation. I haven't hauled a heavy load with it yet, so I won't comment on that now. I expect them to work as advertised. The material and components feel premium, and the Firestone brand, particularly the Ride-Rite version, has a reputation for being premium.