T-Motor AT4125 3D Fixed Wing UAV Long Shaft Brushless Motor

The T-Motor AT4125 Long Shaft is a 4125-class outrunner for 3D aerobatic planes, fixed-wing UAVs and VTOL forward-flight propulsion. It comes in two windings on the same long-shaft body: 540KV for 6S setups and 250KV for 12S.

Key features

• High-temperature-resistant arc magnets hold output under sustained load

• Hand-wound 12N14P stator for efficiency and stable endurance

• Long 6 mm output shaft for fixed-wing propeller mounting; T-Motor pairs it with its 15 x 8 folding props and AT115A ESC

• 540KV: up to 2000 W and 85 A peak (180 s) on 6S

• 250KV: up to 2200 W and 50 A peak (180 s) on 12S

Specifications

• Configuration: 12N14P

• Shaft diameter: 6 mm

• Motor size: approx. 50 x 74 mm

• 540KV: 6S, 2000 W max (180 s), 85 A peak, 14 mOhm, approx. 355 g with cable

• 250KV: 12S, 2200 W max (180 s), 50 A peak, 68 mOhm, approx. 350 g with cable

Choose 540KV for 6S planes and lighter UAVs; choose 250KV for 12S systems that want lower current for similar power, which eases wiring and ESC sizing.