Review on Engine Optimization Spring Assist by Warrick Dembo

As they cost less than a new pair of shock absorbers for my car I fitted them instead. I then drove the 30ft RV for a thousand miles and had no sag or jump. The hardware that came with the kit is flimsy, so I decided to buy new U-bolts for it at the parts store. It was difficult to tighten them evenly so they come out straight. Other than that, this is a great product.