How to Choose Motors for a 5-Inch FPV Drone
Pick a 5-inch FPV motor by stator size, KV, and cell count. A 2207 motor suits 5-inch props, with 1800KV for 6S and 2450KV for 4S. A 2205 motor costs less and flies a 5-inch quad on 4S. Check the peak current first. The XING-E Pro 2207 weighs 33.8g and peaks at 35.22A in the 1800KV version.
Quick facts
| Fact | Value |
|---|---|
| XING-E Pro 2207 KV | 1800KV, 2450KV, 2750KV |
| XING-E Pro 2207 weight | 33.8g with wire, per iFlight |
| XING-E Pro 2207 shaft | 5mm steel hollow shaft |
| RS2205 KV | 2300KV, CW and CCW, for 5-inch racing |
| 2204 motor cells | 2S to 3S, 2300KV |
| Lowest price motor here | $5.99 for the RS2205 |
What does the 2207 in a motor name mean?
The first two digits give the stator diameter in millimeters. The last two digits give the stator height in millimeters.
A 2207 motor has a 22mm stator that is 7mm tall. A 2205 motor has the same diameter with a shorter 5mm stator.
A taller stator gives more torque for the same diameter. That is why 2207 motors suit 5-inch props with fast throttle changes.
Which KV fits 4S and which fits 6S?
KV is the RPM per volt with no load. A higher KV spins faster on the same battery voltage.
The XING-E Pro 2207 comes in 1800KV for 6S and 2450KV or 2750KV for 4S, per iFlight. Pick 1800KV for 6S and 2450KV for 4S.
A 2300KV motor such as the RS2205 suits 4S on a 5-inch quad. Check the listing for its cell range before you pick a battery.
How much current does a 5-inch motor draw?
Peak current decides the ESC rating. The XING-E Pro 2207 peaks at 35.22A in 1800KV, 42.63A in 2450KV, and 50.03A in 2750KV, per iFlight.
Size each ESC above the peak current of its motor. A 45A ESC suits the 1800KV version, while the 2750KV version needs 55A or more.
Check the motor spec sheet for peak current, not just KV. Two motors with the same KV can peak at very different currents.
What shaft and mounting pattern do you need?
The XING-E Pro 2207 uses a 5mm steel hollow shaft and a 16 by 16mm mount, per iFlight. Check your frame arms for the same pattern.
Most 5-inch frames use a 16 by 16mm motor mount with M3 screws. A motor with a different pattern will not bolt on without an adapter.
Check the prop mount too. Some motors use a threaded shaft with a nut, while others use a T-mount for direct prop screws.
When does a cheaper motor make sense?
A low cost motor suits a first build or a practice quad. The RS2205 costs $5.99 and flies a 5-inch quad on 4S.
A higher cost motor gives better bearings and magnets. The XING-E Pro 2207 uses NSK bearings and N52H magnets, per iFlight.
Spend more on the motors you fly hard. Keep cheap spares for crash damage and bench testing.
How the options compare
| Motor | Size and KV | Cells | Peak current | Price |
|---|---|---|---|---|
| RS2205 | 2205, 2300KV | 2S to 6S | Not listed | $5.99 |
| Readytosky 2206 | 2206, 1500KV | 2S to 3S | Not listed | $16.99 |
| 2204 | 2204, 2300KV | 2S to 3S | Not listed | $26.99 |
| XING-E Pro 2207 | 2207, 1800KV | 3S to 6S | 35.22A | $59.99 |
| XING-E Pro 2207 | 2207, 2450KV | 2S to 4S | 42.63A | $59.99 |
| XING-E Pro 2207 | 2207, 2750KV | 2S to 4S | 50.03A | $59.99 |
How do you pick a 5-inch FPV motor?
- Pick the prop size first, then the stator size that drives it.
- Pick the cell count, then the KV that matches it.
- Read the peak current from the spec sheet.
- Pick an ESC rated above that peak current.
- Check the mounting pattern against your frame arms.
Parts that fit this guide
In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 10, 2026.
RS2205 2300KV Brushless Motor, CW/CCW, for 5 Inch FPV Racing ($5.99)
Low cost 2205 motor at $5.99. It runs 2300KV in CW and CCW for 5-inch FPV racing.
Readytosky 2206 1500KV Brushless Motor, 2-3S, for Fixed-Wing and Multirotor Drones ($16.99)
2206 motor at $16.99. It runs 1500KV on 2S to 3S for fixed-wing and multirotor builds.
2204 2300KV Brushless Motor, 2-3S, CW/CCW for 200-250 FPV Frames ($26.99)
2204 motor at $26.99. It runs 2300KV on 2S to 3S in CW and CCW for 200 to 250mm frames.
XING-E Pro 2207 Brushless Motor, 1800/2450/2750KV, 2-6S, for 5 Inch Props ($59.99)
2207 motor at $59.99. It comes in 1800KV, 2450KV, and 2750KV and weighs 33.8g per the iFlight spec.
Shop the full range: FPV Motors at Quality RC Parts. See also: Related guide.
Frequently asked questions
What KV motor do I need for a 5-inch 6S build?
Use 1800KV in a 2207 size. The XING-E Pro 2207 in 1800KV suits 6S and peaks at 35.22A.
Can I run a 2450KV motor on 6S?
No. The 2450KV version is rated for 2S to 4S, per iFlight. Use 1800KV for 6S.
What does 2207 mean on a motor?
It is the stator size. A 2207 stator is 22mm across and 7mm tall.
How many motors does a 5-inch quad need?
Four motors, two CW and two CCW. The RS2205 listing covers CW and CCW rotation.
Sources
- iFlight XING-E Pro 2207 motor specs
- ArduPilot connecting ESCs and motors
- Betaflight ESC firmware guide
Last updated: November 10, 2026.