Hyper-Flex System Master Set (8.18105R) by Energy Suspension. This is an all-inclusive kit which includes bushing sets for front and rear control arms, front and rear track bars, and front sway bars. Hardware such as zinc-plated steel center shafts, shackle braces, washers, threaded castle nuts, and cotter pins are included. Resilient polyurethane offers greater resistance to deterioration from road grime, oil leaks, and salt slush without drying out or crumbling the way rubber mounts can.