Description How To Identify Bosch SX Motor Use one or more of the following differences to confirm your motor variant of the Bosch SX motors: 1. Motor Mounting Bolt Pattern All Bosch SX motors use a 2-bolt mounting system, but bolt positions vary by model: BDU3142 & BDU3143: Both bolts are located at the top left and top right of the motor — above the crank arm. BDU3144 & BDU3145: One bolt is located at the top left and the other at the bottom right, positioned diagonally opposite — with one above and one below the crank arm. Quick Check: If both bolts are above the crank, it's a BDU3142 or BDU3143. If the bolts are diagonally placed, it's a BDU3144 or BDU3145. 2. Diagnostic Report – Motor ID Running a Bosch diagnostic report will show the motor product code, which identifies the variant: BDU3142 BDU3143 BDU3144 BDU3145 3. Product Code Sticker on the Motor Bosch SX motors have a product code sticker located on the motor casing. This sticker displays the model number (e.g., BDU3143), which can be used to determine the exact variant. In some cases, this sticker is visible without removing the motor, but on certain bikes, motor removal may be necessary. Using these three methods ensures accurate identification of Bosch SX motor variants. Diagnostic Report Motor Label Mounting Bolt Pattern BEFORE PURCHASING THIS DEVICE, IT IS NECESSARY TO CHECK THE “PRODUCT CODE” OF YOUR BOSCH PERFORMANCE LINE SX MOTOR. THE “PRODUCT CODE” IS SHOWN ON THE MOTOR LABEL. IN THE EXAMPLE THE TWO TYPES OF LABEL USED BY BOSCH ARE VISIBLE AND THE “PRODUCT CODES” OF THE MOTORS CIRCLED IN RED. What is SpeedFun Furious Evo tuning for Bosch Performance Line SX (gen. 4) 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 motor a speed always lower than 25 KmH in order to obtain a real speed with a very high active motor. The maximum speed limit will therefore be dictated by the power of the engine added to the power expressed by one’s legs (info). When the device is active, the display will show the exact speed up to the threshold of about 20 KmH, beyond which a manipulated speed will always be shown below 25 KmH. This speed release device is compatible only and exclusively with Bosch Performance Line SX (gen.4) motors equipped with a magnet on the valve (Bosch Rim Magnet) with LED Remote/System Controller command (also compatible with Led Remote Kiox 300/500, Intuvia 100, Purion 400 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 installed easily thanks to the compatible connectors. The kit includes all the elements necessary for installation, thus guaranteeing extreme ease of assembly. All these elements have been specifically designed and created by us to guarantee correct placement of the parts during installation phases and avoid malfunctions over time or inconveniences during your riding. Since these parts are made internally at our company. company have been specifically designed to best fit the Bosch Performance Line SX (gen. 4) Smart System motor. ATTENTION! This device is not compatible with ebikes equipped with a “classic” magnet on the spokes or brake disc (see here). This device is not compatible with ebikes equipped with the Bosch ABS system. This device is not compatible with ebikes equipped with a GPS system (Bosch ConnectModule).   Ebike with Bosch Performance Line SX Smart System (gen. 4) motor – Rim Magnet where the Furious Evo easy device has been successfully installed (this list is illustrative and not exhaustive)   – Focus JAM² 6.9 – Focus JAM² 6.7 – Focus JAM² 6.0   – Santa Cruz Vala XX AXS RSV – Santa Cruz Vala X0 AXS RSV – Santa Cruz Vala S – Santa Cruz Vala R – Santa Cruz Vala GX AXS   – Trek Rail 9.9/Rail 9.8/Rail 9.7/Rail 8/Rail 5 Gen 5 (2025) – Trek Powerfly 8/Powerfly 6/Powerfly 4 Gen 5 (2025)