Torque Solution Rear Upper Control Arm Bushings 2008+ Subaru WRX/STITorque Solution polyurethane control arm bushings replace the soft OEM inner rubber material that over time deteriorates and fails. These will provide improved traction and reduced wheel hop without excessive vibration, as they are made from 75a durometer polyurethane and utilize stainless steel pins. Features: Eliminates wheel hop and traction loss Improved 60 fts e. t's 75A durometer bushings Stainless steel pins Limited lifetime warranty