1. Einleitung
Thank you for choosing the Viribus E-bike Mid-Drive Motor Conversion Kit. This kit is designed to transform your standard bicycle into an electric bicycle, providing pedal assistance for a smoother and more enjoyable riding experience. This manual provides essential information for the safe installation, operation, and maintenance of your conversion kit. Please read it thoroughly before installation and keep it for future reference.

Image 1.1: Viribus Mid-Drive Motor Conversion Kit Overview
2. Sicherheitshinweise
Ihre Sicherheit hat oberste Priorität. Bitte beachten Sie die folgenden Sicherheitsrichtlinien:
- Tragen Sie beim Fahren mit Ihrem E-Bike immer einen Helm und die entsprechende Schutzausrüstung.
- Ensure all connections are secure and waterproof before riding, especially after installation.
- Do not attempt to modify the motor or electrical components. Unauthorized modifications can lead to malfunction, injury, or void the warranty.
- Keep children and pets away from the e-bike during operation and charging.
- Regularly inspect your e-bike for any signs of damage, loose parts, or wear.
- The kit requires a 36V battery (not included). Use only compatible batteries and chargers.
- Adhere to local regulations regarding e-bike usage, speed limits, and safety.
3. Packungsinhalt
Carefully unpack the box and ensure all items are present and undamaged. If any items are missing or damaged, contact customer support immediately.

Image 3.1: Packing List of Viribus Mid-Drive Motor Conversion Kit Components
- 1 x Mid-Drive Motor
- 1 x Chainring
- 2 x Cranks
- 1 x Control Panel (Display)
- 1 x Gas
- 1 x Scheinwerfer
- 1 x Brake Cable and Sensor
- 1 x Speed Magnet and Sensor
- 1 x 1T4 Cable (Wiring Harness)
- 1 x Schraubenschlüssel
- 2 x Unterlegscheiben
- 2 x Brake Magnets
4. Einrichtung und Installation
This section outlines the general steps for installing your Viribus Mid-Drive Motor Conversion Kit. Professional installation is recommended if you are unfamiliar with bicycle mechanics or electrical systems.
4.1 Kompatibilitätsprüfung
The conversion kit is compatible with most bicycles that have a bottom bracket shell length of 68-73 mm and a diameter of 34-36 mm. It is suitable for various bike types including mountain bikes, city bikes, road bikes, and folding bikes.

Image 4.1: Bicycle Compatibility and Motor Dimensions
4.2 Motorinstallation
- Remove your bicycle's existing crankset, bottom bracket, and front derailleur (if applicable).
- Insert the mid-drive motor into the bottom bracket shell.
- Secure the motor using the provided mounting hardware and washers. Ensure it is tightly fastened to prevent rotation.
- Install the new chainring and cranks onto the motor spindle.
4.3 Kabelverbindungen
The kit features color-coded cables for easy connection. Refer to the diagram below for proper wiring.

Image 4.2: Quick and Easy Setup Wiring Diagram
- Connect the Speed Sensor to the rear wheel and route its cable to the motor.
- Connect the Headlight cable.
- Connect the Brake Sensor cables to your brake levers.
- Connect the Throttle Grip cable.
- Connect the Control Panel (Display) cable.
- Connect the 1T4 Cable harness to the motor and then connect the peripheral components (display, throttle, brake sensors, speed sensor) to the appropriate ports on the 1T4 cable.
- Connect your 36V battery (not included) to the motor's main power cable. Ensure the battery is securely mounted on your bicycle.
5. Bedienungsanleitung
Once installed, operating your e-bike conversion kit is straightforward.
5.1 Ein-/Ausschalten
Press and hold the power button on the control panel to turn the system on or off. The display will illuminate upon activation.
5.2 Intuitive Display Panel
The 2.4-inch color display provides real-time information and allows you to customize your riding experience. It is app-compatible and features an IP67 waterproof rating, operating between -20 to 70°C.

Image 5.1: Intuitive Display Panel Features
Zu den wichtigsten Anzeigeindikatoren gehören:
- Geschwindigkeit: Real-time, average, and maximum speed.
- Distanz: Current trip distance and total odometer.
- Batteriestand: Zeigt die verbleibende Batterieladung an.
- Assist Level/Gear: Zeigt die aktuelle Stufe der Pedalunterstützung an.
- Bandtage: Current system voltage.
- Bluetooth-Status: Indicates connectivity with the app.
- Scheinwerfer-Blinker: Zeigt an, ob das Scheinwerferlicht eingeschaltet ist.
- Tempomat: Activates and indicates cruise control function.
5.3 Fahrmodi
The kit offers versatile riding modes to suit your needs:

Image 5.2: Versatile Riding Modes
- Pedal Assist Control: The motor provides assistance based on your pedaling input, detected by integrated cadence and torque sensors. Adjust the assist level via the display.
- Walk Assist Control: Provides low-speed motor assistance to help you push the bicycle when walking alongside it.
- Manuelle Kontrolle: Ride the bicycle without any motor assistance, similar to a traditional bike, for exercise or when the motor is off.
The motor's advanced cadence and torque sensors adapt seamlessly to your pedaling, providing a smooth and natural boost when needed.
6. Wartung
Regular maintenance ensures the longevity and optimal performance of your Viribus E-bike Mid-Drive Motor Conversion Kit.
- Reinigung: Keep the motor and display clean. Use a damp cloth to wipe surfaces. Avoid high-pressure washing directly on electrical components.
- Verbindungen: Periodically check all electrical connections for tightness and signs of corrosion. Ensure waterproof seals are intact.
- Motorgehäuse: Inspect the motor housing for any physical damage.
- Chainring and Cranks: Ensure the chainring and cranks are securely fastened and free from excessive wear. Lubricate the chain regularly.
- Batteriepflege (falls zutreffend): Although the battery is not included, if you are using a separate 36V battery, follow its manufacturer's instructions for charging, storage, and maintenance to maximize its lifespan.
- Allgemeine Fahrradwartung: Continue with regular bicycle maintenance, including tire pressure, brake checks, and gear adjustments.
7. Fehlerbehebung
If you encounter issues with your conversion kit, refer to the following common problems and solutions:
| Problem | Mögliche Ursache | Lösung |
|---|---|---|
| Motor leistet keine Unterstützung | Low battery, loose connection, incorrect assist level, brake sensor engaged | Check battery charge, ensure all cables are secure, increase assist level on display, check brake levers are fully released. |
| Display lässt sich nicht einschalten | Battery disconnected or dead, loose display cable, faulty display | Check battery connection and charge, ensure display cable is firmly connected, contact support if issue persists. |
| Ungenaue Geschwindigkeitsmessung | Speed sensor misaligned or damaged, magnet missing | Check speed sensor and magnet alignment on the wheel spoke, ensure sensor is clean. |
| Ungewöhnliche Geräusche vom Motor | Loose motor mounting, foreign object, internal motor issue | Check motor mounting bolts, inspect for debris, contact support if noise persists. |
For issues not listed here or if troubleshooting steps do not resolve the problem, please contact Viribus customer support.
8. Spezifikationen
Detailed technical specifications for the Viribus Mid-Drive Motor Conversion Kit:

Image 8.1: Motor Performance and Protection Features
- Modellnummer: EBK-M025-L1
- Nennleistung: 250 W
- Nennvolumentage: 36 V
- Max. Drehmoment: 80 Nm
- Cruising Speed: Bis zu 25 km / h
- Tretlagerkompatibilität: 68-73 mm length, 34-36 mm diameter
- Waterproof Rating (Motor): IP65
- Waterproof Rating (Display): IP67
- Anzeigegröße: 2.4-Zoll-Farbdisplay
- Betriebstemperatur: -20 bis 70 °C
- Besondere Merkmale: Advanced cadence and torque sensors, overcurrent protection, undervoltage protection, app connectivity.
- Gewicht (Artikel): 5.8 kg
- Paketabmessungen: 27 x 26.5 x 24 cm
9. Garantieinformationen
The Viribus E-bike Mid-Drive Motor Conversion Kit comes with a limited warranty. Please refer to the specific terms and conditions provided at the time of purchase or contact Viribus customer support for details. The warranty description states 'NO', which typically means no additional specific warranty details are provided beyond the standard limited warranty.
10. Unterstützung
For technical assistance, warranty claims, or any questions regarding your Viribus E-bike Mid-Drive Motor Conversion Kit, please contact Viribus customer support through the retailer where the product was purchased or visit the official Viribus webWebsite für Kontaktinformationen.





