• Add description, images, menus and links to your mega menu

  • A column with no settings can be used as a spacer

  • Link to your collections, sales and even external links

  • Add up to five columns

  • Hobbywing Combo Xr10 Justock G3S Esc/Justock G2.1 21.5T (Fixed Timing) HW38020373

    Available for collection and delivery within 3-5 days

    Shipping & Delivery

    On this item shipping is usually 3-5 business days from the date of order confirmation, times may vary depending on product and delivery / collection location.

    SKU: HW38020373
    Vendor: Hobbywing

    The XERUN XR10 JUSTOCK G3S ESC is specifically designed for Zero-timing racing class. Its timing system has been permanently set to ZERO degree. Using the same branded motor and winding will ensure that every racer will have the same power system for 100% fair and competitive racing.

    Reliable hardware combined with advanced software technology allows the XERUN XR10 JUSTOCK G3S to not only provide high power output, but also overload protection of the ESC circuit.

    This ESC is designed for 1/10th scale touring cars & 1/12th scale pan cars as well as the ever popular F1 series cars for all Zero-timing spec racing. The ESC features an RPM speed limit function and is able to support up to 79 different RPM speed selections to meet the needs and demands of various competitions in the world.


    • The built-in capacitor avoids the trouble of finding installation position for the external capacitor module, saves space and is convenient for layout
    • The built-in reverse connection protection circuit prevents damaging ESC due to reverse connection of battery
    • Multiple protection circuits, battery low-voltage cut-off protection, over temperature protection, fail safe (throttle signal loss protection) and motor lock-up protection
    • Supports firmware upgrade of ESC (Multi-function LCD program box Pro or OTA Programmer need to be purchased)
    • Supports various RPM limit values to meet the needs of different races. It can be set directly by the program box pro or OTA programmer


    Scale: 1/10 & 1/12
    Brushed/Brushless: Brushless
    Sensored/Sensorless: Sensorless/Sensored
    Waterproof: No
    Motor Limit: >10.5
    Cont./Peak Current: 60A/380A
    Input Voltage: 2S Lipo Only
    BEC Output: Switch Mode: 6.0v/7.4V @4A
    Input Wires: Black-14AWG-200mm*1 Red-14AWG-200mm*1
    Output Wires: Black-14AWG-200mm*3
    Input Connectors: No
    Output Connectors: No
    Fan Size: 25 x 25 x 10mm
    Voltage Range: 5-7.4V
    LCD Program Box: G2/PRO Supported
    OTA Module: WiFi Supported
    Size: 40.9 x 33.9 x 32.1mm
    Weight: 75.4g (inc Wires)

    HobbyWing Justock G2.1 Motor

    Following on from the success of the HobbyWing Justock G2 the Justock G2.1 feature fixed timing and easy to use solder joints, making it an excellent motor for stock or sport class races where a controlled motor is needed.

    The Justock G2.1 has a heat-resistant magnet attached to the aluminium case, double insulated windings, high precision bearings and a rotor with a strong structure which guarantees outstanding performance and increased durability. The built-in hall sensor and non-adjustable end bell combined with the high precision balanced rotor guarantees a smooth linear power delivery.

    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 case is designed for daily cleaning and maintenance which can prolong the service life of the motor and improve its operating efficiency.

    This motor is perfectly matched with the XR10-Justock G3S ESC for all zero timing spec racing and also compatible with other Hobbywing Electronic Speed Controllers.


    • Heat-resistant magnet and aluminium case
    • High precision balanced rotor
    • Applicable to 1/10th, 1/12th on-road and off-road vehicles
    • Perfectly matched with the XR10-Justock G3S ESC
    • Complies with IFMAR, and ROAR specifications


    Scale: 1/10 & 1/12
    Brushed/Brushless: Brushless
    Sensored/Sensorless: Sensored
    Timing: Fixed
    KV: 2050KV
    LiPo's: 2-3S
    No-Load Current: 3A
    Diameter / Length: 35.9mm (1.41") 52.5mm (2.07")
    Shaft Diameter 3.17mm (0.125")
    Bearing Size (Front/Rear): 9.525*3.175*3.967mm
    Poles: 2
    Weight: 175g
    Applications: Stock/Sport Class 1/10th Buggy, Truck, On-Road, Drift Class