BC Racing DS Series True Rear Coilovers 2003-2008 350Z / 2003-2006 G35 Sedan / 2003-2007 G35 CoupeBC Racing's DS Series coilover system is designed for sporty street driving and the occasional track day. Adjustable spring compression and rebound settings, combined with independently adjustable ride height, make customizing your ride easy. You can choose the exact ride height you want, and the patented concave lower locking ring keeps it in place. The unique design of the DS Series ensures consistent damper stroke regardless of ride height,