The ISR Pro Series coilover for Nissan 350Z (Z33) is presented as an adjustable suspension kit intended to replace factory components and allow ride-height and handling tuning. The Pro Series naming signals a focus on tunability and aftermarket setup flexibility for Z33 owners. It is positioned as a direct-fit option for Nissan 350Z Z33 applications without added assumptions about spring rates.
ISR Performance Pro Series Coilovers - Nissan 350z Z33