BAFANG BBS02B 48V 750W CAN BUS Mid-Drive E-Bike Conversion Kit

High-Power Mid-Drive Motor with CAN BUS, 120Nm Torque and Multiple Display Options

The BAFANG BBS02B is a high-performance mid-drive motor conversion system designed to transform compatible bicycles into electric-powered bikes. The 48V 750W configuration provides up to 120Nm of stated torque, while CAN BUS communication enables compatibility with intelligent battery and control systems.

The kit is designed for a range of applications including eMTB, touring, commuting, cargo bikes, e-tricycles and other suitable e-bike builds. It supports 68-73mm and 90-100mm bottom bracket configurations, depending on the selected motor and installation configuration.

Multiple chainring, display and brake-control options are available, allowing the system to be configured according to the intended bicycle build.

General Details

• Brand: BAFANG
• Model: BBS02B
• BAFANG Model: G340.750.C
• Motor Type: Brushless Mid-Drive Motor
• Motor Position: Side-Hung / Mid-Drive
• Rated Power: 750W
• Voltage: 48V
• Maximum Stated Torque: 120Nm
• Communication: CAN BUS
• Reduction Ratio: 1:21.9
• PAS Sensor: Speed Sensor
• Water Resistance: IPX5
• Motor Operating Temperature: -20°C to 45°C
• Brake Compatibility: Brake Lever / Brake Sensor
• Certification: CE
• Warranty: 12 months for motor and battery
• Accessory Warranty: 30 days
• Delivery: 1-7 days, subject to selected configuration and stock

High-Performance Mid-Drive Motor

The BBS02B provides a powerful central motor configuration that drives the bicycle through the existing drivetrain rather than directly powering the wheel.

The 48V 750W version is specified with up to 120Nm of torque, providing strong assistance for demanding riding conditions, including hills, off-road riding, cargo applications and heavier e-bike builds.

The brushless motor design provides efficient electric power delivery with reduced mechanical maintenance compared with brushed motor systems.

CAN BUS Technology

The CAN BUS version of the BBS02B is designed to communicate with compatible electronic components and batteries.

CAN BUS communication can allow compatible systems to exchange information between the motor, battery and other components, supporting more integrated control and monitoring.

The supplied configuration also supports electronic brake-control functionality where compatible brake levers or sensors are selected.

Riding Modes

The system supports multiple riding modes depending on the selected controller, display and configuration.

• Throttle Mode: Direct motor control using the supplied thumb throttle
• Pedal Assist: Multiple PAS levels, with 3, 5 or 9-level configurations depending on display/settings
• Walk Assist: Approximately 6km/h where supported
• Manual Cycling: Ride using the bicycle's normal pedal drivetrain

Bottom Bracket Compatibility

The BBS02B is available for several bottom bracket configurations.

• 68-73mm: Suitable for standard compatible BBS installations
• 90-100mm: Available for wider bottom bracket applications
• Bottom Bracket: Threaded BSA-type shells
• Frame Material: Suitable steel and aluminium bicycle frames

Please measure your bicycle's bottom bracket shell before ordering and select the correct motor configuration.

Bicycle Compatibility

The system is designed for a wide range of compatible bicycles and applications.

• Electric mountain bikes
• Touring bicycles
• City and commuter bikes
• Speed-oriented e-bikes
• Cargo bikes
• E-tricycles
• Other compatible bicycles

The motor is not recommended for carbon-fibre frames or bicycles using coaster brakes.

Professional installation is recommended to ensure correct motor mounting, chain alignment, electrical connections and brake integration.

Chainring Options

The kit can be configured with different BAFANG chainring sizes to suit different bicycle setups.

• 36T
• 42T
• 44T
• 52T

The appropriate chainring depends on the bicycle, drivetrain, desired gearing and intended application.

Display Options

A compatible BAFANG display can be selected depending on the configuration.

Available display options include:

• VD18MT
• VD04
• VD618
• VD03
• DP C080.C
• DPC010CN
• EKD01

Display availability and functionality may vary by configuration. Please select the appropriate display when ordering.

Features

• BAFANG BBS02B mid-drive motor
• 48V electrical system
• Up to 750W rated power
• Up to 120Nm stated torque
• Brushless motor design
• CAN BUS communication
• Speed-sensor pedal assist
• Multiple PAS levels
• Thumb throttle control
• Walk assist function where supported
• Brake lever or brake sensor compatibility
• 36T, 42T, 44T or 52T chainring options
• 68-73mm and 90-100mm bottom bracket configurations
• IPX5 water resistance
• CE certification
• Suitable for MTB, touring, commuting, cargo and other e-bike applications

Specifications

• Brand: BAFANG
• Model: BBS02B
• Motor Model: G340.750.C
• Voltage: 48V
• Power: 750W
• Torque: Up to 120Nm
• Motor Type: Brushless Mid-Drive
• Motor Position: Side-Hung / Mid-Drive
• Reduction Ratio: 1:21.9
• Communication: CAN BUS
• PAS: Speed Sensor
• Motor Temperature: -20°C to 45°C
• Waterproof Grade: IPX5
• Bottom Bracket Options: 68-73mm / 90-100mm
• Brake System: Brake Lever / Brake Sensor
• Chainring Options: 36T / 42T / 44T / 52T
• Certification: CE
• Motor Warranty: 12 months
• Accessories Warranty: 30 days

Package Includes

Depending on the selected configuration, the kit can include:

• 1 × BAFANG BBS02B Mid-Drive Motor
• 1 × Chainring
• 1 Pair × Cranks
• 1 Pair × Brake Levers or Brake Sensors
• 1 × Display, where selected
• 1 × Thumb Throttle
• 1 × Speed Sensor
• 1 × 4-in-1 CAN BUS Cable
• 1 × Installation Accessories Set
• 1 × 36-60V Front Light
• 1 × Installation Tool Wrench
• 1 × Crank Removal Tool
• 1 × 73mm Bottom Bracket Installation Accessories
• 4 × 36V 250W Stickers, where applicable
• 1 × Cable Tie Set
• 1 × User Manual
• 1 Pair × White Gloves

Battery is not included unless specifically selected as part of the configuration.

Important Notes

The product information supplied by the manufacturer includes both 750W off-road specifications and a 250W / 25km/h configuration described as EU/UK road legal. The actual legal classification depends on the selected motor/controller configuration and local regulations.

The 750W / 120Nm configuration may not be legal for use as a standard road-legal e-bike in many jurisdictions, including the UK and EU. Check local regulations before use on public roads.

Please confirm your bicycle's bottom bracket width, frame material, brake system and drivetrain compatibility before ordering.

Carbon-fibre frames and coaster-brake bicycles are not recommended for this conversion.

Professional installation is recommended, particularly for CAN BUS wiring, battery connections, brake sensors and drivetrain alignment.

The included 36V 250W stickers are supplied as accessories where applicable and do not change the actual motor's electrical rating or performance.

Actual performance depends on battery capacity, controller configuration, rider weight, gearing, terrain, bicycle setup and riding conditions.