HobbyWing 30408012 JUSTOCK-21.5T-BLACK-G2.1


HobbyWing 30408012 JUSTOCK-21.5T-BLACK-G2.1

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SKU: HW-30408012 Category:


HobbyWing 30408012 JUSTOCK-21.5T-BLACK-G2.1

Introducing the Hobbywing Justock XR10 G3 brushless speed control with Justock 21.5T motor.

-Built-in polarity protection

-Built-in capacitor module

-RPM speed limit function
The ESC is able to support up to 6 different speed (RPM) selections to meet the needs and demands of various competitions in the world. It can be programmed through using the latest OTA Bluetooth module or the traditional 3in1 program box.

-Zero timing competition design

-Built-in BEC supporting high-voltage steering gear

User-friendly and convenient for set-up
Protection functions
Single programming and RESET design button
The ESC is designed with a single built-in SET button. Calibrating or doing a factory-reset can be achieved by using this SET button. Simple and easy to use

Support bi-directional motor movement

-Support ESC firmware upgrade

Scale – 1/10th
Brushed/Brushless – BL
Sensored/Sensorless – SD
Waterproof – No


Cont./Peak Current – 60A/380A
Input Voltage – 2S LiPo
BEC Output – 6V/7.4V @4A

Wires & Connectors
Input Wires – Black-14AWG-200mm*2
Output Wires – Black-14AWG-200mm*3
Input Connectors – No
Output Connectors – No

Size – 25x25x10mm
Output Wires – 5-7.4V
Input Connectors – Powered by BEC

ESC Programing via

SET Button on ESC – Supported
LED Program Box – Supported
LCD Program Box – Supported
WiFi Module – Supported
OTA Programmer – Supported
Programming Port – Separate

Firmware Upgrade – Supported

Size & Weight
Size – 40.9×33.9×32.1mm
Weight – 75.4g(w/Wires)

Applications – SL BL Motors / SD BL Motors
Vehicles – 1/10thTouring Cars & Buggies for Racing
KV Rating/T Count – ≥10.5T 3650 Motor

– The main feature of these motors is the fixed timing and easy to use solder joints, making it an excellent motor for controlled classes.

– The use of a heat-resistant magnet attached aluminum case and double insulated windings, high precision bearings, and rotor with a strong structure guarantees outstanding performance and super durability.
– The built-in Hall sensor non-adjustable end bell combined with a high precision and balanced rotor guarantees the user a smooth and linear power on demand.
– The silicon O-ring seal fitted between the end bell and stator helps to conduct inner heat to the motor case and prevent dust from entering the HALL sensor.
– The detachable structure design for daily cleaning and maintenance can effectively prolong the service life of this Justock motor and improve its operating efficiency.
– This motor is perfectly matched with the XR10-Justock ESC for all zero timing spec racing and also compatible with other Hobbywing Electronic Speed Controllers including other brands.
– This Justock motor is applicable to various 1/10th, 1/12th on-road & off-road vehicles. It can be an ideal choice for Stock or Sport class races but can also be a nice choice for newbies for practice.
– The motor design is in compliance with IFMAR, and ROAR specifications.

Additional information

Weight 0.40 kg
Dimensions 25.00 × 25.00 × 20.00 cm