Overview
The Hobbywing XeRun V10 G4R is a ROAR sensored brushless motor for 1/10th RC cars, designed for 1/10 and 1/12 Stock racing. It uses a high-performance stator core, a built-in high-precision Hall sensor, and a high-precision balanced rotor for smooth, linear throttle response. An exposed stator-core can design and a large rear opening support airflow and heat dissipation, while a dual sensor interface helps accommodate different wiring layouts.
Note: Due to differences in competition rules, there are two versions: the standard (G4) version for IFMAR/EFRA rules and the ROAR (G4R) version for ROAR rules. The Standard version is in the EFRA and IFMAR list; the ROAR version is in the ROAR certification list. The specific version used is subject to the rules announced by the competition.
Key Features
- Specially designed for 1/10–1/12 Stock racing
- High-performance stator core
- Built-in high-precision Hall sensor and high-precision balanced rotor for linearity and smoothness
- Fully exposed stator-core outer structure to maximize heat dissipation
- Large rear opening structure to further improve heat dissipation
- Dual sensor ports (x2) for flexible sensor wire routing; unused port protected by an included silicon port plug
- Widened copper bar spacing for easier wire soldering
- High-precision, high-strength bearings and copper solder tabs
- 220°C high temperature resistant enameled wire (temperature resistance is up to 40°C higher compared to other brands)
- New stator, rotor, and sensor assembly: improvements in overall speed and power output by up to 5%; output power increased by nearly 4% vs V10 G4 motor series
- ROAR version: thermally conductive winding epoxy fills the coil caps to increase heat dissipation; temperature is about 15% lower for the same input power
- Copper on the motor is 50% thicker to support lower internal resistance and greater heat capacity
- Internal resistance is about 3% lower than that of G4
- Open core can and all-new rotor help airflow through the motor to maximize cooling (rotor heat dissipation is a patent design)
- Easy maintenance modular design for regular service and cleaning
- Wear-resistant silent gasket: updated nylon mixed shims; gasket wear resistance increased by approximately 2 times
- Standard rotor: PN 30820450. Optional rotor: PN 30820407 (stronger magnetized rotor) for medium/large track Blinky competitions or high-traction tracks
For customer service and product support, contact https://rcdrone.top/ or email support@rcdrone.top.
Specifications
Model specifications
| Parameter | XeRun V10 G4R 13.5T | XeRun V10 G4R 13.5T-ROAR | XeRun V10 G4R 17.5T | XeRun V10 G4R 17.5T-ROAR | XeRun V10 G4R 21.5T | XeRun V10 G4R 21.5T ROAR |
|---|---|---|---|---|---|---|
| Product Number | 30401749 | 30401746 | 30401748 | 30401745 | 30401747 | 30401744 |
| Scale | 1/10th | 1/10th | 1/10th | 1/10th | 1/10th, 1/12th | 1/10th, 1/12th |
| Brushed/Brushless | BL | BL | BL | BL | BL | BL |
| Sensored/Sensorless | SD | SD | SD | SD | SD | SD |
| Pole Count | 2 | 2 | 2 | 2 | 2 | 2 |
| KV Rating | 4100KV | 4100KV | 3150KV | 3150KV | 2600KV | 2600KV |
| LiPo Cells | 1-3S LIPO | 1-3S LIPO | 1-3S LIPO | 1-3S LIPO | 1-3S | 1-3S |
| No-load Current (A) | 5.4A | 5.4A | 4.6A | 4.6A | 4.0A | 4.0A |
| Max. Power Output (W) | 297W | 297W | 213W | 213W | 166W | 166W |
| Current at the Point of | 70.7A | 70.7A | 49.4A | 49.4A | 37.7A | 37.7A |
| O.D. (mm) | 35.8 | 35.8 | 35.8 | 35.8 | 35.8 | 35.8 |
| Length (mm) | 51.3 | 51.4 | 51.4 | 51.3 | 51.3 | 51.3 |
| Shaft Diameter (mm) | 3.175 | 3.175 | 3.175 | 3.175 | 3.175 | 3.175 |
| Weight (g) | 152g | 149g | 148g | 158g | 152g | 152g |
| Front Bearing | D9*D4*T4 | D9*D4*t4 | D9*D4*t4 | D9*D4*T4 | D9*D4*T4 | D9*D4*T4 |
| Rear Bearing | D8*D3*T4 | D8*D3*t4 | D8*D3*t4 | D8*D3*T4 | D8*D3*T4 | D8*D3*T4 |
| Recommended ESC | XeRun XR10 G3 | XeRun XR10 G3 | XeRun XR10 G3 | XeRun XR10 G3 | XeRun XR10 G3 | XeRun XR10 G3 |
| Vehicles | 1/10th & 1/12th STOCK | 1/10th & 1/12th STOCK | 1/10th & 1/12th STOCK | 1/10th & 1/12th STOCK | 1/10th & 1/12th STOCK | 1/10th & 1/12th STOCK |
Mechanical drawing dimensions
| Motor body diameter | 35.80 ±0.15 |
| Motor length | 51.30 +0.50 / -0.20 |
| Shaft diameter | Ø 3.175 |
| Shaft length (dimension shown) | 13.90 ±0.50 |
| Step length (dimension shown) | 2.80 |
| Front section length (dimension shown) | 12 |
| Front face diameter | Ø 25.20 |
| Mounting holes | 6-M3 |
| Angle mark | 60° |
| Rotation marking | C.C.W |
What’s Included
- Motor rotor (PN 30820450) (standard)
- Silicon port plug for the unused sensor port
Applications
- 1/10 and 1/12 Stock racing applications
Details

The XeRun V10 G4R motor layout includes a 25.20 mm diameter can, 51.30 mm overall length, and six M3 mounting points for 1/10 RC installs.

The Hobbywing XeRun V10 G4R motor features a vented can design and easy-access solder tabs for clean wiring in 1/10 RC car builds.

The XeRun V10 G4R update features a new stator, rotor, and sensor assembly, with the graphic noting up to 5% overall speed/power improvement and nearly 4% higher output power versus the V10 G4 series.

The XeRun V10 G4R uses 220°C high temperature resistant enameled wire on the motor windings for added heat tolerance.

The XeRun V10 G4R motor includes dual sensor ports to give you more options for sensor wire routing in a 1/10 RC car setup.

The XeRun V10 G4R motor is offered in both standard and ROAR versions, with the label clearly showing a 13.5T wind option.

The XeRun V10 G4R sensored brushless motor features a serviceable design with a removable rotor, endbell, and bearing components for easier maintenance.

The XeRun V10 G4R features a stator and winding design focused on low internal resistance for efficient 1/10 RC power delivery.

The XeRun V10 G4R motor uses an open-core can layout to help airflow move through the motor for heat dissipation.

In the same test loads, the Hobbywing XeRun V10 G4R 13.5T reports 7% more speed and 9% more power than a comparable non-Hobbywing motor.

The XeRun V10 G4R uses a modular motor design with a separate rotor, stator, and sensor module for straightforward disassembly and cleaning.


The XeRun V10 G4R motor uses a wear-resistant silent gasket design to help keep operation smooth and consistent.
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