SpeedBox 1.5 B.Tuning for Bosch SX

SpeedBox 1.5 B.Tuning for Bosch SX Gen4 motors (BDU3144, BDU3145) offers Bluetooth-enabled tuning with simplified installation—no magnet simulator required. Unlock unlimited speed (recommended max 35 km/h) and view real-time ride data via the SpeedBox App. Compatible with Bosch Rim Magnet setups and current software versions. Not compatible with standard magnets or ABS systems.

SIMPLIFIED INSTALLATION No need to find a suitable position for the Magnet Simulator DESIGNED FOR: Performance Line SX motors of 4. Gen (Motor Models BDU3144) (Motor Models BDU3145) PROPERTIES: Maximum speed: Unlimited (max 35 km/h recommended) Display shows: Real speed: NO (only in SpeedBox App) Correct travelled distance: After the countdown process is finished Activation/deactivation (do not perform while riding): SpeedBox App WALK function Buttons - + - + Indication of tuning activation/deactivation: YES (3.5/2.5 km/h) Compatible with: Performance Line SX motors of 4. Gen (Models BDU3144, BDU3145) E-bikes that have a magnet attached to a valve (Bosch Rim Magnet) The current Bosch software version Not compatible with: Standard magnet ABS system Please check your e-bike type and motor space before purchasing the product SpeedBox 1.5 B.Tuning for Bosch SX (Smart System + Rim Magnet) SpeedBox 1.5 B.Tuning is a premium tuning chip designed for Bosch Performance Line SX Gen4 motors (BDU3144, BDU3145) equipped with the Smart System and Rim Magnet configuration. This version offers Bluetooth connectivity and full integration with the SpeedBox App, allowing riders to unlock speed limits and monitor ride data directly from their mobile device. Simplified Installation No need to position a separate magnet simulator Uses original connectors for secure, plug-and-play setup Compatible with Bosch Rim Magnet (valve-mounted) Not compatible with standard spoke magnets or ABS systems Designed For Bosch Performance Line SX motors (4th Generation) Motor Models: BDU3144, BDU3145 E-bikes with Smart System and Rim Magnet Current Bosch software versions (see compatibility list) Key Features Feature Description Maximum Speed Unlimited (recommended max 35 km/h) Speed Display Real speed shown only in SpeedBox App Distance Accuracy Correct after countdown process Activation Methods SpeedBox App, WALK assist, or button sequence (- + - +) Tuning Status Display Yes (3.5 km/h = ON, 2.5 km/h = OFF) Speed Limit Customization Adjustable via app or control unit (up to 99 km/h) SpeedBox App Integration Real-time speed, distance, and trip data Save and compare rides Speed limit adjustment and Invisible Mode Motor diagnostics and PIN-protected access Available on Google Play and App Store Installation Notes Ride your new e-bike at least 10 km before activating tuning Connect male-female connectors in the direction of the lock—do not twist Activate/deactivate tuning only when stationary Allow the countdown to finish before turning off or removing the display Legal and Safety Disclaimer SpeedBox products are intended for use on private property only. Use on public roads may violate local laws and void your e-bike’s warranty. Always wear protective gear and disable automatic firmware updates in the eBike Flow App to reduce detection risk.