Each EVO 8/9 Kit Includes: - Front Control Arm Bushings - Rear Control Arm Bushings - Rear Trailing Arm Bushings - 24mm Front Sway Bar Bushings - 22mm Rear Spiral Sway Bar Bushings - Rear Differential / Mustache Bar Bushings The HyperFlex Master Kit allows for real performance both on the street and on the track. A few of the benefits of these kits include: - Increases vehicle stability and control as well as durability. - Reduces wheel hop and traction loss. - Proven for many years, by both professional and amateur racers alike. - Both restores and improves better than new! - Made of Energy's HYPER FLEX performance polyurethane. - Heavy duty metal components are used, for increased strength, when applicable.