The Belltech Performance Absorber improved my vehicle`s performance immensely! As a hesitant buyer, I wasn't sure if it would make any noticeable difference, but it did. As a result of using the product, I found that my ride is smoother, and my vehicle handles better on the road. In terms of noise, I did notice a slight increase but it's barely noticeable .Overall, the Belltech 9523 Street Performance Absorber IS a fantastic addition to any automotive enthusiast's suspension upgrade..