Over the years, the automotive industry has spawned a multimillion business based on car customization products and services. The car customization industry has grown in exponential proportions from the introduction of the first auto part installed for other purposes other than its practical function. The pro Comp add-a-leaf spring is installed to the suspension assembly of the Toyota 4Runner for the increased comfort level of the Toyota 4Runner car occupants. Pro Comp add a leaf springs add lift to the rear of the Toyota 4Runner effectively providing the driver and his passengers a better ride especially during long off road trips. The Pro Comp add a leaf spring is not just another suspension component of your Toyota 4Runner as it performs a host of other functions other that provide a more comfy ride to the car occupants. Being a part of the suspension system, the Pro Comp add a leaf spring aids in supporting the chassis weight of the vehicle as well as in controlling chassis roll resulting in a more favorable ride due to increased stability. With all these functions that the Pro Comp add a leaf spring performs, it is constantly under a tremendous amount of tension and will inevitably deteriorate in efficiency given due time. Once this happens, the quality of operation of your Toyota suspension assembly will inevitably suffer. Immediate replacement of the malfunctioning part is imperative. Call us today for your Pro Comp add a leaf spring.