B and B (B&B) Suspension sells accumulators for less. We are a small business specializing in active suspension accumulators (struts) for the Infiniti Q45a, the Lexus LX 470, and the Toyota Landcruiser 100. I have personally maintained Citroen and Mercedes hydraulic suspensions for over 30 years and, as an engineer, know how much attention is necessary to maintain these complex designs. Because the nitrogen gas in an accumulator slowly leaks out (like air will leak out of your tires), the accumulators will loose the ability to dampen bumps causing the ride quality to suffer. In order to maintain the active suspension your car was designed for and built with, don't replace it with standard springs and struts, get new accumulators so you can enjoy the smooth ride your car was designed for.