XeRun V10 17.5T G4R Brushless Motor - Black

Brushless Motor Upgrade for RCs

Next-generation performance for serious RC racers.

The XeRun V10 G4R raises the bar for spec class racing. With a completely redesigned stator, rotor, and sensor system, the G4R platform delivers confirmed improvements of up to 5% in overall speed and power output compared to the G4 series. Against popular non-Hobbywing motors, the G4R 13.5T shows 7% more speed and 9% more power under the same load conditions.

Built for ROAR, EFRA, and IFMAR competition classes, the G4R provides the perfect balance of efficiency, cooling, and raw racing power.

Key Performance Upgrades

• More Speed & Power – +4% over the G4 series, +7% speed & +9% power over leading non-Hobbywing motors.

• Low Internal Resistance – New stator and winding design reduce resistance for higher efficiency and consistent performance under spec rules.

• Cooler Operation – Internal resistance stability keeps temperatures lower, ensuring power stays consistent throughout the race.

• Open-Core Can Design – Improved airflow through the stator and new rotor for maximum cooling efficiency.

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  Competition-Ready Cooling Options

• Standard Version – Designed to meet IFMAR/EFRA rules (on official lists).

• ROAR Version – Uses thermally conductive winding epoxy for enhanced heat dissipation, reducing temps even further under the same input power.

• Large rear heat-dissipation ports provide cooling to both the stator and sensor assembly.

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  Race-Tuned Features

• Adjustable Timing – Mechanical timing setup for fine-tuning performance.

• Silent, Wear-Resistant Gaskets – Nylon-mixed shims ensure ultra-quiet operation and long-lasting consistency.

• Dual Sensor Ports – Flexible sensor wire routing with protective silicon plugs for unused ports.

• Easy Maintenance – Modular design makes cleaning and servicing simple, extending motor life.

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  Premium Materials & Engineering

• High-performance first-tier iron core

• 180°C high-temperature explosion-proof rotor for durability under extreme racing loads

• 220°C high-temperature enameled wire for unmatched heat resistance and efficiency

• International premium-grade bearings for smooth, reliable performance

• Thicker copper windings for lower resistance and improved heat capacity

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  Technical Specifications

• Series: Hobbywing XeRun V10 G4R

• Types: Standard (IFMAR/EFRA) & ROAR Version

• Performance: +4% over G4 series, +7% speed / +9% power over popular competitors

• Cooling: Open-core can, rotor cooling, epoxy winding (ROAR)

• Features: Dual sensor ports, adjustable timing, modular design

• Application: 1/10 Spec Racing (ROAR, EFRA, IFMAR approved)