Description Ebike with Bosch Performance Line CX Smart System engine (gen. 4)-(Gen 4 BES3) – Rim Magnet This new SpeedFun Furious Evo easy is a Bosch Speed Unlock Rim Magnet tuning device for e-bikes equipped with a Bosch Smart System engine that has a magnet on the rear wheel valve stem. Compatible with the latest Bosch Drive Unit firmware version 19.54.0 that was released on May 4, 2026 as part of the major Performance Update 2.0 for the Bosch eBike Smart System. This release device is compatible only and exclusively with Bosch Performance Line CX - (Gen 4 BES3) motors equipped with a valve magnet (Bosch Rim Magnet) regardless of the display or handlebar control. All SpeedFun Furious Evo speed release devices can be activated and deactivated at any time and without the need for connections to the light output. What is SpeedFun Furious Evo tuning for Bosch Performance Line CX Smart System – Rim Magnet? The function of the Furious Evo tuning device for Bosch Smart System is to electronically manipulate the rotation speed of the rear wheel and to communicate to the engine a speed that is always lower than 25 KmH in order to obtain a very high real speed with the engine active. The maximum speed limit will therefore be dictated by the power of the engine added to the power expressed by your legs ( info ). When the device is active, the display will show the exact speed up to a threshold of approximately 20 km/h, beyond which a manipulated speed of always less than 25 km/h will be shown. This speed release device is compatible only and exclusively with Bosch Performance Line CX and Performance Line CX Race Limited Edition (gen.4 BES3) motors equipped with a valve magnet (Bosch Rim Magnet) with LED Remote/System Controller control (also compatible with Led Remote Kiox 300/500, Intuvia 100 or System Controller Mini Remote) or Purion 200. SpeedFun Furious Evo is supplied ready to use, plug and go, can be activated and deactivated at will and maintains the setting even after the ebike is turned off. It can be easily installed thanks to the compatible connectors. The Bosch Speed Unlock Rim Magnet kit includes all the elements necessary for installation, thus ensuring extreme ease of assembly. All these elements have been specifically designed and created by us to ensure correct positioning of the parts during installation and to avoid malfunctions over time or inconveniences during your outings. Since these parts are made internally by our company, they have been specifically designed to best fit the Bosch Performance Line CX (gen.4 BES3) Smart System engine. ATTENTION! This device is not compatible with e-bikes equipped with a “classic” magnet on the spokes or on the brake disc (see here ). This device is not compatible with e-bikes equipped with a Bosch ABS system. This device is not compatible with e-bikes equipped with a GPS system (Bosch ConnectModule).   Ebike with Bosch Performance Line CX Smart System engine (gen.4 BES3) – Rim Magnet where the Furious Evo easy device was successfully installed 2024 Focus Sam2 2024 Focus Jam2 Rim Magnet Chip Installation Guide