Upgrading your suspension in your STI can transform it from mild to an extreme handling machine, but often upgrading the coilovers results in poor comfort. HKS wants to give you the best of both worlds with their HiperMax IV GT Coilovers. They maintain proper comfort by painstakingly engineering the damper to match the spring rates perfectly, giving the coilover the ability to soak up bumps and imperfection in the road with each. Combined with the rubber isolated upper mounts, which help keep the noise, harshness and vibrations out of the car provide the car with a quiet and smooth ride. Handling is something HKS has been excelling in for decades, and they have put their brightest minds in making this coilover one of the best handling setups you can buy for the street. By utilizing an inverted design along with being precisely setup right from the factory, these coilovers are ready to bolt on and give you the ultimate handling for the street and just about any condition you can throw at them. With independent height, spring pre-load adjustments and damping adjustment, you can dial in the coilovers for any road condition or look you desire. For the ultimate in handling and comfort in your STI, make sure you go with the best and go with HKS.