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Bafang M620 (Ultra) 48V 1000W Torque-Sensing Mid-Drive KitBafang M620 (Ultra) 48V 1000W Torque-Sensing Mid-Drive Kit 2Bafang M620 (Ultra) 48V 1000W Torque-Sensing Mid-Drive Kit 3

Bafang M620 (Ultra) 48V 1000W Torque-Sensing Mid-Drive Kit

Bafang M620 "Ultra" mid-drive kit: 1000W rated, torque + cadence sensing and an integrated controller, built for eCargo and fat-bike loads.

  • 1000W rated Bafang M620 (MM G510.1000.C) with torque and cadence sensing
  • Bafang lists 170 N·m max torque and up to 1000% assist ratio
  • Controller integrated in the drive unit; ISIS spindle
  • Runs on 48V or 52V packs
  • Kit ships with DP C18 display, 44T chainring, speed sensor and cranks
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Specifications

Motor type
Mid-drive
Motor power
1000W (1440W peak)
Voltage
48V / 52V
Torque
170 N·m
Top speed
45 km/h
Wheel sizes
26"
Bottom bracket
Frame-adapter mount (3 × M8 bolts) per Bafang manual; ISIS spindle; chainline 48 / 70 mm
Compliance
S-pedelec / off-road power class (1000W, 45 km/h)

The M620, widely sold as the Bafang “Ultra”, is Bafang’s highest-output mid-drive for cargo and fat bikes. Its torque sensor reads rider input directly, so assistance follows pedal pressure rather than just cadence — useful when starting heavy loads on climbs.

Bafang’s dealer manual describes mounting through a three-bolt frame adapter, while several resellers offer kits for conventional frames. Confirm the mounting version with us before ordering.

Specifications

ParameterValue
MotorBafang M620 / MM G510.1000.C (Ultra)
Motor weight6.7 kg
Pedal sensorSpeed + torque
ControllerIntegrated in drive unit; 32A / 30A max current (48V / 52V)
DisplayBafang DP C18 (UART)
CertificationsCE / UL2849
Battery compatibility48V or 52V Li-ion (battery not included)

Models & specifications

VariantVoltage
48V (30–32A)48 V
52V (28–30A)52 V

What’s in the box

  • M620 drive unit with integrated controller
  • Motor cover
  • DP C18 LCD display
  • 44T chainring with chain guard
  • Left and right crank arms
  • Speed sensor and magnet
  • Throttle
  • 2 × brake levers with motor cut-off
  • Headlight and taillight leads
  • Mounting screw set

Highlights

  • Torque + cadence sensing: Assistance scales with pedal force for smoother starts under load.
  • High assist ratio: Bafang lists a maximum support ratio of 1000%.
  • Light output: 12 V / 12 W max light drive per Bafang.
  • Water resistance: Rated IP X5 by Bafang.

FAQ

Does the M620 bolt into a normal bottom bracket?

Bafang’s own manual mounts it on a frame adapter with three M8 bolts. Some resellers offer versions for standard frames — we will confirm which version is supplied.

What battery does it need?

A 48V or 52V pack; a battery is not part of the kit.

Wholesale, quote-only. Tell us your quantity, target market and required configuration (voltage, display, wheel size / BB width) and we will reply with a quotation.