BC Racing BR Series Coilovers 08-13 Cadillac CTS - Sigma II - RWD ONLY Cadillac CTS- Chassis Code: SIGMA II - RWD ONLY Mono-tube shock design. Separate full length height adjustable. One year warranty. 30 levels of damping force adjustment, adjust compression/rebound. Front camber plates will be included only on applicable vehicles Custom Kits available (Contact us prior to ordering) One year warranty & rebuilds available.