Speedbox 3.2 B. Kit tuning per motori Yamaha PW-SE, PW-X, PW-TE, PW-X2, PW-ST
The SpeedBox 3.2 B.Tuning for Yamaha chip is a top-notch product perfectly optimized for the most powerful ride and experience. It suppresses the speed limiter so you can enjoy your ride at unlimited speed.