Sunnysky X4130 Gen3 KV520 is a high-RPM brushless motor built for aggressive 3D aerobatics and competition-level freestyle flight. Based on the 4130 stator platform with high-KV winding tuning, it features internal resistance as low as 12.9mΩ and current carrying capacity up to 115A/60s, delivering a maximum output power of 2650W on 6S LiPo, with significantly better power burst and throttle response than lower KV versions.
The motor inherits the third-generation 12-slot 14-pole optimized magnetic circuit and high-precision dynamic balancing process, combined with upgraded bearings and winding heat dissipation design, ensuring controllable temperature rise and stable operation during long full-throttle aerobatic flight. The high-RPM characteristic matched with small-size high-pitch propellers provides abundant power reserve for 2500-4200g class aerobatic planes, easily performing extreme 3D maneuvers such as hovering, rolling, dive pull-up, making it the first choice for players pursuing aggressive flight feel and competition performance.
| Item | Specification |
|---|---|
| Stator Diameter | 41mm |
| Stator Thickness | 30mm |
| Stator Slots | 12 |
| Rotor Poles | 14 |
| Motor KV | 520KV |
| No-Load Current | 2.46A @ 10V |
| Motor Resistance | 12.9mΩ |
| Max Continuous Current | 115A / 60s |
| Max Continuous Power | 2650W |
| Weight | 399g |
| Rotor Diameter | 49.7mm |
| Total Body Length | 59mm |
| Max LiPo Cells | 6S LiPo |
| Recommended ESC | 120A |
