Fits: 1979–1985 Mazda RX-7 Energy Suspension11.7101GBushing KitsThese performance polyurethane components help reduce common wheel roll-under. This occurs when stopping abruptly, especially when using performance tires. For both front of rear drive vehicles is so equipped. Replaces that original, short lived and too-soft O.E.M. rubber. On front wheel drive vehicles- diminishes wheel hop and traction loss during standing start accelerations. Better maintains proper alignment under extreme conditions. Made of Energy's Hyper-Flex(TM) performance polyurethane to add both performance and durability.During hard "standing start" accelerations, Energy Suspension's strut rod bushings help control unwanted steering axis changes, diminishing wheel hop and reducing traction loss. While accomplishing all of this, they still allow the suspension to smoothly travel throughout its full operating range without binding.