Speedbox 1.5 for Bosch SX (Smart System + Rim Magn

SpeedBox 1.5 for Bosch SX Gen4 motors (BDU3144, BDU3145) with Smart System and Rim Magnet offers simplified installation and removes the speed limiter for unrestricted riding. Compatible with current Bosch software and activated via WALK function or button sequence. Not compatible with ABS or standard magnets.