iFlight XING 1504

What it pulls

iFlight’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.

What you get for $16.99

• One-piece bell

  iFlight lists the rotor as Unibell, its one-piece bell.

  Source: iFlight product page

• Curved N52H magnets

  Arc-shaped N52H magnets, 14 poles on a 12-slot stator.

  Source: iFlight 3100KV test report

• NSK bearings

  5 × 2 × 2.5 mm NSK bearings.

  Source: iFlight product page

• Single-strand windings

  One strand per tooth, 247 mΩ between phases.

  Source: iFlight product page

• 12.3 g with wires

  For a 15 × 4 mm stator with a φ21.6 mm bell.

  Source: iFlight product page

What to pair it with

Our reading of iFlight’s numbers, so your build matches what the motor was tested with.

ESC

Rated for at least 12.44 A, the peak iFlight measured at full throttle on a 3525 tri-blade on 4S. A 20 A AIO or 4-in-1 leaves room to spare. (iFlight 3100KV test report)

Props

iFlight tested it with a 3525 tri-blade (3.5 × 2.5): 169 g at half throttle and 433 g at full. (iFlight 3100KV test report)

Battery

4S. iFlight gives 16.8 V as the input and says it is not a 6S motor. (iFlight product page)

Frame

Four M2 holes on a 9 mm circle (sold as "9 × 9"). Four M2×5 and two M2×7 screws come in the box. (iFlight product page, iFlight 3100KV test report)

Where to buy

• iFlightthe maker's store
  $16.99seen Oct 19, 2026
  Visit

Plain links, not affiliate links. Prices change; the store’s page has the current one.

Full specs

Bench data

Redrawn from iFlight’s test reports. Thrust is static pull on a bench, more than you get in flight. Power is volts × amps; efficiency is thrust divided by power.

Inside the motor

A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:

• Bell. One piece (iFlight's "Unibell"), φ21.6 mm across and 10.05 mm tall. (iFlight 3100KV test report)
• Shaft. 1.5 mm, protruding 4 mm above the bell; below the base its 2 mm end sticks out 1.05 mm. (iFlight 3100KV test report)
• Magnets. Curved N52H magnets, 14 poles. (iFlight 3100KV test report)
• Stator. 15 × 4 mm with 12 teeth, wound with single-strand copper; 26 AWG leads, 160 mm long. (iFlight 3100KV test report)
• Bearings. NSK, 5 × 2 × 2.5 mm. (iFlight 3100KV test report)
• Base. 1.5 mm thick, with four M2 holes on a 9 mm circle. (iFlight 3100KV test report)

How fast it spins

KV is the motor’s no-load speed per volt. With nothing on the shaft, the 3100KV version reaches about these speeds; a prop loads the motor and brings it down, typically to around 70–75% of these figures at full throttle.

A 14-pole rotor has 7 pole pairs, so every turn of the shaft is 7 electrical cycles, and a six-step ESC switches the phases 42 times per turn.

About the 3D model

A generic outrunner drawn from iFlight’s published sizes: the 15 × 4 mm stator, 21.6 mm bell, 13.45 mm height, 1.5 mm shaft, 9 mm mounting circle and 12 teeth and 14 magnets. Anything iFlight doesn’t publish is typical for a motor this size, and the bell’s spoked top, the base and the inside are a generic design, not this motor’s. The colours are read off the maker’s product photos. There are no logos or markings: it is our drawing, not the maker’s.

Sources

1. iFlight: XING 1504 FPV Motor - Black (product page, with its photo and Q&A). Retrieved Oct 19, 2026.
2. iFlight: XING 1504 3100KV test report (spec table, dimension drawing, thrust data). Retrieved Oct 19, 2026.