Grip Feeling SUSTEC GF210: Geared for performance trace your favorite racing line with the performance-oriented GF210 series springs. Specifications: Featuring increased spring rates of 20-30% over stock Grip Feeling is more oriented towards performance. Lowering the ride height 1 1/24 to 1 1/2in (30-40mm) gives the car an aggressive stance while providing a lower center of gravity for an increased amount of turning stability. High Quality: The ultra light-weight ultra durable ultra precise 210 series springs are created through Tanabes newly developed shot-peen technology and state-of-the art German machinery. *G-Tec Bump Stopper included on certain applications.*