SpeedBox 1.4 for Bosch SX (Smart System + Rim Magnet)

The SpeedBox 1.4 for Bosch SX (Smart System + Rim Magnet) removes the factory speed restriction from Bosch Performance Line SX Gen4 motors, unlocking your e-bike s full potential. Designed specifically for models with the Bosch Rim Magnet setup, it offers precise integration and seamless operation. This tuning chip is engineered for reliability, maintaining natural motor behaviour and accurate data display when set up correctly.Key Features and Benefits:Engineered for Bosch Performance Line SX Gen4 motors: Designed to work flawlessly with BDU3142 and BDU3143 drive units, ensuring a perfect electrical and software match for safe and consistent performance.Rim Magnet compatibility: Built for e-bikes using the Bosch Rim Magnet system, allowing easy installation without the need for additional adapters or rewiring, ensuring a clean and secure fit.Removes factory speed limiter: Overrides the default 25 km/h restriction, giving the rider access to the motor s full capability for faster commuting or sportier riding when used off-road.Smart System integration: Works with Bosch Smart System firmware, ensuring stability during updates and full compatibility with the latest software revisions.Simple activation process: After installation, the tuning is activated through the e-bike s menu by adjusting wheel circumference settings, allowing users to enable or disable the tuning when needed.Robust, reliable construction: Built from quality electronic components that resist vibration and temperature changes, ensuring long-term durability and consistent operation in all riding conditions.The SpeedBox 1.4 provides precise and reliable tuning for Bosch SX systems without disrupting the natural pedal feel or drivetrain performance. Its compatibility with rim magnet setups makes it an ideal choice for riders seeking clean installation and consistent results. By safely unlocking the motor s top-end speed, it gives experienced users the flexibility to optimise performance based on terrain and conditions.SpeedBox 1.4 for Bosch SX offers an easy and reliable way to unlock more from your e-bike. Designed for performance and built for precision, it s a dependable upgrade that enhances the capability of every Bosch Smart System motor.Designed For:Performance Line SX motors of 4. Gen(Motor Models BDU3142)(Motor Models BDU3143)Mounted with 2 top screwsE-bikes that have a magnet attached to a valve (Bosch Rim Magnet)Not compatible with:Standard magnetABS system