Review on Optimize Your Vehicle's Performance with Timbren FR1504D Suspension Enhancement System by Samuel Nguyen

Installs in 15 minutes. My F150 pulls my 4,400-pound dump trailer without the slightest hint of squatting. Add another 4 tons of gravel and it still drives without squatting. Wow. Inexpensive retrofitting and reduces the load on the leaf springs. For the first few days, the rear end rode harder over bumps. A few HEAVY loads later and the bumpy ride eased up. Even without a trailer, it doesn't seem that difficult. I recommend an upgrade. Cheaper and less installation time than other upgrades.