Skunk2 Racing's Pro - ST Coilovers for Subaru BRZ, Scion FR - S, are engineered as the best single adjustable suspension system on the market at a price point you can afford Serious club racers and discerning high performance street car owners agree that the Pro - ST's 12 way dampening, mono - tube design, threaded shock bodies with independent height spring pre - load adjustment, and billet radial bearing upper camber mounts give them all the control they need at the track without sacrificing ride quality on the street.