TEIN PERFORMANCE BAR is developed with high quality reinforcement, using selected materials under world-class quality control. If the vehicle's chassis is deformed or twisted when materials under world-class quality control. If the vehicle's chassis is deformed or twisted when driving, even an expensive suspension kit will not be able to perform up to its full ability. TEIN Performance Bar, with ultra light-weight and highly rigid aluminum shafts, is sure to increase the rigidity of the vehicle and to bring out the suspension's full potential.