Torque Solution Rear Upper Inner Control Arm Bushings - Subaru WRX & STi 2008+Torque 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 too much vibration, as they are made from 75a durometer polyurethane and utilize stainless steel pins. Features: Eliminates wheel hop traction loss Improved 60fts e. t's 75A durometer bushings Stainless Steel Pins Limited Lifetime Warranty *ONLY 1 kit