Hobbywing: XERUN V10 G4 Motor (21.5T)

Features Compliance: Meets IFMAR, ROAR, EFRA, BRCA, JMRCA standards; certified by RoHS, CE, FCC. Performance: 9.8% higher KV, 5% more output, and 4% lower resistance than V10 G3R. Cooling: Exposed stator core improves heat dissipation by 25.6%, with a large rear opening for added cooling. Design: Dual sensor interfaces for flexible wiring; wider copper bar spacing for easier soldering. Precision: High-precision Hall sensor and balanced rotor ensure smooth performance. Maintenance: Easily dismantled for simple upkeep and parts replacement. Durability: Heat-resistant components (up to 200°C), robust stator, high-precision bearings, and high-current copper tabs. Specifications Turns: 21.5 kV Rating: 2500 Lipo: 2-3s Max. Output Power (W): 173 Current @Max. Output Power (A): 38 Poles: 2 Front Bearing: 9x4x4mm Rear Bearing: 8x3x4mm Outer Diameter: 35.8mm Length: 51.4mm Shaft Diameter: 3.175mm Weight: 148g