Factory subframe bushings are very sloppy. Mitsubishi engineered these to rely heavily on bushings to absorb bumps and cater to ride comfort. The problem with that is every time you try to launch the car, the bushings bind up and then snap back repeatedly making the subframe bounce up and down causing the suspension to hop up and down. Combine that with a stiffer suspension, coil overs or stickier rubber on an aging Eclipse and you have bad wheel hop off the line.
Energy Suspension’s polyurethane subframe inserts fit inside the subframe bushings to take up the excess slack and play in the stock rubber subframe bushing.
FITMENT:Mitsubishi 1G Eclipse 1990-1994