NOTE: Conventional tuning modules offer only limited functionality compared to today’s e-bike standards. They often rely on complex and unintuitive display button sequences for activating, deactivating, or adjusting speed limits. This makes operation cumbersome, especially during a ride. In some cases, users must stop the bicycle and manually rotate the rear wheel multiple times to initiate or confirm the selected setting — a process that is inefficient and inconvenient for real-world riding conditions.
|
Feature |
❌ Conventional Tuning Chips |
✅ EPAspeed B.Tuning |
|
Setup & Activation |
Complicated button combinations, easy to forget |
Simple app control — activate or deactivate with a tap |
|
Speed Limit Adjustment |
Requires rotating the wheel or entering complex codes |
Instantly adjustable in the EPAspeed app |
|
Firmware Resistance |
Easily disabled after motor or display updates |
Fully resistant to OEM firmware updates |
|
Display Compatibility |
Often shows wrong speed or altered speed |
Preserves full speed and distance accuracy |
|
Installation |
Wired directly into display or motor — risk of detection |
Contactless design — no software interference |
|
Bluetooth Functionality |
Availablem on selected model but expensive |
Built-in Bluetooth — control settings, monitor stats, set limits |
|
User Experience |
Outdated, difficult to use, and not intuitive |
Modern, seamless, and designed for real e-MTB riders |
|
Safety & Reliability |
Risk of error codes, firmware lockout, or damage during updates |
Engineered for long-term reliability with non-invasive integration |
In contrast, the EPAspeed B.Tuning series represents the next generation of e-bike tuning — fully app-controlled, firmware-resistant, and designed for effortless operation. With Bluetooth connectivity, intuitive controls, and invisible tuning functionality, EPAspeed delivers precision, reliability, and freedom unmatched by conventional solutions.
Key Features
• Tuning Control – Instantly activate or deactivate tuning
• Adjustable Speed Limits – Set your preferred maximum assistance speed
• Invisible Tuning Mode – Undetectable operation for smooth and safe performance
• Trip Recording – Automatically save and review detailed ride statistics
• Comprehensive Ride Data – Monitor distance, duration, average & max speed, and elevation
👉 Click here to view the EPAspeed 1.3 B.Tuning for Bosch Rim Magnet
COMPATIBILITY & PRODUCT CODE VERIFICATION GUIDE
Important – Please Read Before Purchasing
Before purchasing this device, it is essential to verify the “Product Code” of your Bosch motor to ensure compatibility.
The Product Code is printed directly on the motor label.
In the example image, the two label formats currently used by Bosch are shown, with the Product Codes highlighted in red.
COMPATIBLE BOSCH MOTORS
BDU33 (Gen3): Performance Line, Active Line, Active Line Plus
BDU3142 / BDU3143 (Gen4): Performance Line SX, Motor mounting: 2 upper bolts
BDU3144 / BDU3145 (Gen4): Performance Line SX, Motor mounting: 2 diagonal bolts
BDU37 (Gen4): Performance Line CX, Performance Line CX-Race
BDU38 (Gen5): Performance Line SX, Performance Line CX, Performance Line CX-R
NOT COMPATIBLE WITH
❌ Classic Spoke Magnet Systems
This device is not compatible with e-bikes equipped with the traditional magnet mounted on the wheel spokes or brake disc.
❌ Bosch ABS Equipped Bikes
This device is not compatible with e-bikes using the Bosch ABS braking system.
❌ Bosch ConnectModule / GPS Systems
This device is not compatible with e-bikes equipped with the Bosch ConnectModule GPS system.
SpeedFun for Bosch Performance Line CX Smart System – Rim Magnet BDU37
This speed release device is compatible only and exclusively with Bosch Performance Line CX (BDU37) motors equipped with a magnet on the valve (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 connection to the light output is not necessary.
What is SpeedFun Furious Evo tuning for Bosch Smart System?
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.
This speed release device is compatible only and exclusively with Bosch Performance Line CX (BDU37) 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 or System Controller + Mini Remote) or Purion 200.
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.
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 CX (BDU37) Smart System engine.
INSTALLATION MANUAL
https://www.speedfun.bike/wp-content/uploads/2024/06/Istruzioni-FURIOUS-EVO-EASY-BOSCH-RIM-MAGNET-IT-EN-FR_compressed.pdf
