HOBBYWING Brushless Technology

XERUN V10 G4 Motor - SPEC Class (13.5T-21.5T)


Size: G4 13.5T

MSRP $180.00
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V10 G4-Spec Class (13.5T-21.5T)

 13.5T, 17.5T, 21.5T  1/10th STOCK Class Racing
  • Excellent performance, specially designed for racing; Compared with the V10 G3R motor, the KV value of the G4 motor is increased by 9.8%, the maximum output power is increased by 5%, and the internal resistance is reduced by 4%.
  • The innovative outer diameter structure of the fully exposed stator core maximizes the heat dissipation area and increases the direct heat dissipation area by 25.6% compared with G3R. In addition, the rear end of the motor is a big opening structure to further improve the heat dissipation effect.
  • Dual sensor interface design to meet various wiring/layout requirements.
  • The special copper bar is customized and the spacing of the copper bar is widened, which greatly facilitates the operation of soldering wire.
  • The built-in high precision Hall sensor combined with the high precision and balanced rotor guarantee outstanding linearity of the motor.
  • The motor case is designed to be easy to dismantle for maintenance purposes and for the replacement of common wearing parts.
  • The use of a high-performance stator core, heat(200°C)-resistant wire, heat(180°C)-resistant rotor with strong structure, world-class high precision, and high strength bearings, and copper solder tabs with super-current
  • It’s compliant with IFMAR, ROAR, EFRA, BRCA, JMRCA rules, and certificated by RoHS, CE, FCC and etc. 
p/n T KV LiPo
(Ω) No-load
Power (A)
30401140 13.5 3950 2-3 0.021Ω 4.5A 322 70
Φ7-12.5*25.2-HUS 149
30401141 17.5 3020 2-3 0.036Ω 3.7A 234 51
Φ7-12.5*25.2-HUS 149
30401142 21.5 2500 2-3 0.055Ω 3.0A 173 38 Φ7-12.5*25.2-GUS


Recommended Gear ratio: 

Stock Class 13.5T 17.5T 21.5T
TC (Small track) 4.7 : 1 4.0 : 1 3.5 : 1
TC (large Track) 4.0 : 1 3.5 : 1 3.0 : 1
TC 1/12th 55mm 66mm 80mm
2WD Off-road 7.6 : 1 6.6 : 1 NA
4WD Off-road 8.3 : 1 8.3 : 1 N/A


To avoid short circuits, ensure that all wires and joints must be well insulated before connecting the motor to related devices.

  • Never allow this product or other electronic components to come in contact with water, oil, fuel or other electro-conductive liquids. If it happens, stop the use of the product immediately and let it dry carefully.
  • Read through the manuals of all power devices and chassis and ensure the power configuration is rational before using this unit.
  • Never apply full throttle if the pinion gear is not mounted on, because (under the no-load circumstances) high RPMs may get the motor damaged.
  • Connect all the devices carefully, you may not control the vehicle properly or encounter some unpredictable issues like damaged components if any poor connection exists.
  • To avoid possible damage (result from overheating) to the product, please control the soldering time within 5 seconds when soldering the motor wires (a soldering iron with the power of at least 60W is needed).
  • Stop immediate usage once the casing of the motor exceeds 100℃/212℉ as a high temperature may damage the motor and cause the rotor to demagnetize. Hobbywing recommends activating the “Motor Thermal Protection” (of the ESC).

  User's Manual 


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