Tongsheng TSDZ2B 250 W 36 V

250 W mid-drive with torque sensor, sold by the retailer as a set with display and a 468 Wh downtube battery.

  • Mid-drive
  • approx. €474 (as of 2026-11-09, no guarantee) (battery included)
  • Not tested by us yet

Key data

Rated power250 W
Torque80 Nm
Voltage36 V
SensorTorque
Battery in setYes
Weightunknown
Bottom bracket shellThreaded, 68 mm (BSA), Threaded, 73 mm (BSA)
Battery sizes468 Wh
Battery positionsDown tube
Pedelec-conformYes, if set up correctly

Fits / does not fit

Fits

  • Bottom bracket: Threaded, 68 mm (BSA), Threaded, 73 mm (BSA)

Does not fit

  • Bottom bracket: Threaded, 83 mm (BSA), Threaded, 100 mm (BSA), Threaded, 120 mm (BSA), No thread, press-fit, No thread, BB30

What is in the box

  • Mittelmotor TSDZ2B 36 V 250 W
  • Display EKD01
  • Akku 36 V 13 Ah (468 Wh) für Unterrohr

Required accessories not included

According to our data nothing required has to be bought separately.

Offers

Retailer prices, see date. Partner links are marked.

Pros / Cons

Pros

  • Torque sensor, so assistance follows pedal force.
  • The set including battery costs under 500 EUR.

Cons

  • The retailer listing was sold out on the check date.
  • Retailer states aluminium frames with chain drive only; shell 68-73 mm, inner diameter 33.5-36 mm.
  • Retailer lists only disc or V-brakes as suitable.

Sources