These engine mounts replace the OEM top and lower engine mounts. This combination will reduce 90% of wheel hop and engine movement to improve shifting, traction, and prevent damage to the intercooler hoses and exhaust systems due to excessive engine movement. These mounts have less vibrations when compared too the other aftermarket mounts. Take a look at the amount of urethane we use on each mount. We use 50% more urethane then all out competitors. These are the same mounts in the fastest world challenge Neon SRT-4's in the world.