A 5-inch 6S quad needs 2207 motors near 1750KV, a 5 mm shaft, and a 12 mm by 12 mm mounting pattern. The XING-E Pro 2207 runs at 1800KV on 2S to 6S and suits freestyle. This guide explains KV, stator size, and shaft fit, and compares the motors that fit a standard 5-inch build.
What does 2207 mean on a motor?
The first two digits give the stator diameter in millimeters, and the last two give the stator height. A 2207 motor has a 22 mm stator that is 7 mm tall.
A taller stator gives more torque at the cost of weight. A 2207 motor balances torque and weight for a 5-inch freestyle quad.
Which KV suits 6S on a 5-inch quad?
1750KV to 1800KV is the standard range for 6S freestyle. KV means revolutions per minute per volt with no load, so 1750KV on 22.2 V spins near 38,850 RPM unloaded.
A 2300KV motor suits 4S, where 14.8 V keeps RPM in range. Never run a 2300KV motor on 6S, because the extra voltage pushes current past safe limits.
How do you read a motor spec sheet?
Check KV, cell count, shaft diameter, and mounting pattern. The XING-E Pro 2207 lists 1800KV, 2S to 6S, and a 5 mm shaft in its spec.
Check the max current rating against your ESC. A 50 A ESC covers 2207 motors on 6S with room for full-throttle punches.
What shaft and mounting pattern fit a 5-inch frame?
Most 5-inch frames take motors with a 12 mm by 12 mm mounting pattern and a 5 mm shaft. The XING2 rotor bell and shaft fit 2306 and 2207 motors.
A 5 mm shaft takes standard 5-inch props with a 5 mm bore. Check the frame motor mount holes before ordering a motor with a different pattern.
When should you replace a motor bell or shaft?
Replace the bell after a bent shaft or a cracked magnet. The XING2 replacement bell and shaft fits 2306 and 2207 motors and costs less than a new motor.
A motor that grinds or wobbles has a bent shaft or a bad bearing. Swap the bell first, since it is the cheaper fix.
Which motors suit a heavy freestyle build?
A 2207 motor at 1800KV handles a GoPro and a 6S 1300 mAh pack on a 5-inch frame. A 2507 1800KV motor gives more torque for a heavier rig.
A 1404 4500KV motor suits a 3-inch cinewhoop, not a 5-inch quad. Match motor size to frame size first, then pick KV for your cell count.
Quick comparison
| Motor | Stator | KV | Cell count | Frame |
|---|---|---|---|---|
| XING-E Pro 2207 | 22 by 7 mm | 1800KV | 2S to 6S | 5 inch |
| RS2205 | 22 by 5 mm | 2300KV | 3S to 4S | 5 inch |
| Readytosky 2206 | 22 by 6 mm | 1500KV | 2S to 3S | Fixed-wing |
| 1404 4-pack | 14 by 4 mm | 4500KV | 3S to 4S | 3 inch |
Frequently asked questions
Can I run 2207 motors on 4S?
Yes. A 1750KV motor on 4S spins slower and gives less thrust, but it runs cooler. It is a safe combo, just not the fastest one.
What causes a motor to desync?
A desync happens when the ESC loses track of the rotor position, often from a damaged motor or a too-low ESC timing setting. Check motor screws first.
How long do FPV motors last?
A freestyle motor lasts many months of regular flying. Replace bearings or the bell when the motor wobbles, grinds, or loses thrust.
Do I need CW and CCW motors?
Yes. A quad uses two clockwise and two counter-clockwise motors. The RS2205 ships in CW and CCW pairs for this reason.
Parts used
XING-E Pro 2207 Brushless Motor, 1800/2450/2750KV, 2-6S, for 5 Inch Props, $59.99. iFlight XING-E Pro 2207 brushless motor in 1800/2450/2750KV, 2-6S compatible with 5 inch props. Unibell design for smooth, durable FPV racing power. Ships from NY, USA.
RS2205 2300KV Brushless Motor, CW/CCW, for 5 Inch FPV Racing, $5.99. RS2205 2300KV brushless motor for 5 inch FPV racing quads. Race-spec with N52 magnets and Japanese bearings, CW/CCW options. Ships from NY, USA.
Readytosky 2206 1500KV Brushless Motor, 2-3S, for Fixed-Wing and Multirotor Drones, $16.99. Readytosky 2206 1500KV brushless outrunner motor, 2-3S, NMB ball bearings, CNC aluminum case, 28 g. For fixed-wing planes and multicopter builds. Ships from NY, USA.
Brushless FPV Motor, Metal Multi-Rotor (1404 to 2507 Sizes), $32.99. Multi-rotor brushless motor kit with metal motors for FPV quadcopter DIY builds. A matched motor set for custom multi-rotor aircraft. Ships from NY, USA.
1404 4500KV Brushless Motor, 4-Pack, for Cinewhoop FPV Freestyle, $132.99. SpeedyBee 1404 4500KV brushless motors, 4-pack. Waterproof power for cinewhoop and freestyle builds. Ships from NY, USA.
XING2 Replacement Rotor Bell and Shaft for 2306/2207 Motors, $28.89. iFlight XING2 replacement rotor bell and shaft for 2306/2207 brushless motors. N52H curved magnets for faster response. Ships from NY, USA.
SpeedyBee F7 V3 50A Stack with BL32 4-in-1 ESC for FPV Racing, $145.99. SpeedyBee F7 V3 stack with BL32 50A 4-in-1 ESC for FPV racing. FC only, ESC only, or full stack. STM32F722, BMI270, Bluetooth config. Ships from NY, USA.
UAngel F722 F7 Flight Controller Stack with 45A/60A 4-in-1 ESC and VTX1000 for FPV Racing, $54.87. UAngel F722 F7 flight controller stack with BLHeli_S 45A/60A 4-in-1 ESC, FC only, ESC only, stack, or stack with VTX1000. STM32F722, ICM42688, Betaflight. Ships from NY, USA.
APEX 5 5-Inch Carbon Fiber FPV Frame Kit, 225mm, 5.5mm Arms, $52.99. APEX 5 5-inch carbon fiber FPV freestyle frame kit, 225mm wheelbase, 5.5mm arms, about 138g. Frame kit or 3D printed parts version. Takes 5-inch props, 2205-2306 motors, 30-50A ESCs. Ships from NY, USA.
A2212/A2208 Brushless Outrunner Motor, Multi-KV Options, $25.99. XXD A2212/A2208 brushless outrunner motors, 930KV to 2600KV options. For RC aircraft and multicopters on 2-3S. Ships from NY, USA.
A2212 Brushless Outrunner Motor + 30A ESC + 1045 Propeller Combo, $47.99. A2212 brushless outrunner motor, 30A ESC, and 1045 propeller combo. Pick KV and plug type for RC aircraft and multicopters. Ships from NY, USA.
X4108 Brushless Motor, 600KV/380KV, 6S/8S, 5mm Shaft, $50.99. Angel X4108 brushless motor, 600KV or 380KV on 6S/8S with 5mm shaft. For 12 and 14 inch propellers on big multirotors. Ships from NY, USA.
T3.5×2.5×3 3525 Flower Tri-Blade 3.5 Inch FPV Props, $14.48. HQProp T3.5×2.5×3 flower-profile tri-blade 3.5 inch FPV propellers. Smooth, efficient cruising props. Ships from NY, USA.
3016 3 Inch 4-Blade Props, 8 Pairs, $31.99. DarwinFPV 3016 3 inch 4-blade propellers, 8 pairs for 3 inch FPV builds. Ships from NY, USA.
Related buying guides on Quality RC Parts
Large Drone Frames and Motors in the USA
FPV Flight Controllers and ESCs in the USA
Browse all the guides on the Quality RC Parts Drone Guides hub, or start at the Quality RC Parts store.
Sources
- Wikipedia: Brushless DC electric motor (KV definition)
- HobbyWing: ESC and motor product documentation
- Betaflight: open source flight controller firmware
Quality RC Parts stocks parts in New York, USA and ships in-stock orders in 1-2 business days.
Last updated: 2026-11-10.