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Protect controller from dirt
You may also set the speed limit of your own choice
Upgrade your Sur-Ron parts with aircraft-grade aluminum
Activation: ONE short press of WALK button and/or [+ - + -] buttons
A replacement rear fender/number plate mount for the Surron
SpeedBox 1.3 for Bosch Gen4 (Smart System + Rim Magnet) _tab_speedbox-installation-shimano Protect controller from dirtWhat does this Tuning Kit do? SpeedBox 1. 3 for Bosch is a tuning chip that removes the speed limiter on your e bike. With this chip you can ride faster and enjoy the full potential of your Bosch motor. How does Speedbox work? The tuning kit manipulates the speed signal without altering the motor's power relative to pedaling speed. This guarantees a smooth motor control without speed limit interruptions. Depending on a tuning kit, some determine when
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