RS-R Superdown Sus Springs Fit 16-18 Infiniti Q50 Redsport/Silversport AWD N145S *We keep these in stock for immediate shipment. Place your order before 10 am EST on a weekday and we'll ship the same business day* RS-R, the number one aftermarket spring manufacturer in Japan is proud to bring their technology and know-how to the US. Though all springs may look like they are the same, their performance is not. And because RS-R takes into account that every model of car has its own characteristics, the lowering springs ensure more than just the look you desire. Just because they fit, does not mean they were meant to perform properly for the car. Now available in the US, RS-R currently offers two types of lowering springs in the US, the Down Sus, and the Super Down.
