These Tein performance bars are developed with high quality reinforcement, using certain materials under world-class quality control. If a car's chassis is twisted while driving, even a suspension kit will not be able to perform up to it's full potential. These tein performance bars, that have ultra light-weight and highly rigid aluminum shafts, is sure to help stablize the rigidity of the car and to bring out any suspension's full potential. The concept of these bars are made to help keep the chassis of car to be rigid using lightweight aluminum shaft bars. With aluminum cutout mounting plates anodized in their infamous tein green color. Affordability was also another factor for tein. They wanted these bars to be affordable for those low budget tuner heads. Tein also states that this is the only tower bar on the market that has compatability with EDFC installtion.