RSS Club Sport Coil Overs have more of everything - more spring rate, more shock valving - and are designed for the committed motorsport enthusiast who requires the ultimate in handling performance. The result is flat cornering and supreme directional control - a perfect choice for the true street tuner that lives to abuse the track. Like the H&R Street Performance Coilovers, RSS Club Sport Coilovers feature an H&R exclusive dynamic damper technology and a fully threaded shock body (not an imitation sleeve-over). H&R coil overs are engineered for street use. Unlike traditional twin-tube shock absorbers, H&R Coil Overs feature a state-of-the-art mono-tube gas shock construction. Combined with the knowledge and skill of H&R's suspension engineers, the use of this state-of-the-art technology results in the best suspension product that you can buy for your vehicle.