■ Features mauntobussyu for sports running elastic strengthen hardness of the hard case. Acceleration on/off when at full capacity and when braking, cornering reduces the sway and tilt of your engine resulting in increased acceleration response and shift feel as well, and also improve your effect with cornering performance. ■ Compatible models Silvia 180SX PS13, RPS13, S14, S15 sr20dt, SR20DET * mauntobussyuassenburi-