2 to 3-inch toothpick FPV motor
GEPRC GR1204
A 3.8 g 1204 for toothpicks and 105–110 mm whoops on 3S–4S and 40–75 mm props, in 3750KV and 5000KV; GEPRC publishes no bench data for it.
- Toothpicks and 105–110 mm whoops
- 3S–4S
- 40–75 mm props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 1204 motor drawn from GEPRC’s published sizes, not its exact design. No-load speed is KV × 14.8 V, a nominal pack for this version. GEPRC publishes no bench data for it.
- Weight
- 3.8 g
- GEPRC’s scale photo shows 6.0 g with the lead and plug
Plain links: we earn nothing from them.
What you get
3.8 g
GEPRC gives 3.8 g; its scale photo shows 6.0 g with the 50 mm lead and plug.
Source: GEPRC 5000KV page, GEPRC lead photo, GEPRC scale photo
Two bearings
GEPRC uses a dual bearing design, which it says keeps the motor better balanced.
Source: GEPRC 5000KV page
Bolt-on prop hub
Besides the 1.5 mm shaft, the hub has four M2 holes on a 5 mm circle for props that bolt on.
Source: GEPRC drawing
What to pair it with
Our reading of GEPRC’s numbers, so your build matches what the motor was tested with.
- Props
- GEPRC lists 40–75 mm props, for 105–110 mm whoops and toothpicks. (GEPRC 5000KV page)
- Battery
- 3S–4S for both KVs; the feature list says 1S–4S. (GEPRC 5000KV page, GEPRC 3750KV page)
- Frame
- Four M2 holes on a 9 mm circle. (GEPRC drawing)
Where to buy
- GEPRCthe maker’s store; 5000KV, out of stock when checked$11.90seen Oct 19, 2026Visit
- GEPRCthe maker’s store; 3750KV, out of stock when checked$11.90seen Oct 19, 2026Visit
Plain links, not affiliate links. Prices change; the store’s page has the current one.
Full specs
| Spec | Value | Source |
|---|---|---|
| KV | 5,000 rpm/V (also 3750KV) | GEPRC 5000KV page |
| Stator | 12 × 4 mm (1204) | GEPRC 5000KV page, GEPRC 3750KV page |
| Configuration | 9N12P (9 stator slots, 12 magnet poles) | GEPRC 5000KV page, GEPRC 3750KV page |
| Battery | 3S–4S LiPo (both KVs; the feature list says it works with 1S–4S) | GEPRC 5000KV page, GEPRC 3750KV page |
| Weight | 3.8 g (GEPRC’s scale photo shows 6.0 g with the lead and plug) | GEPRC 5000KV page, GEPRC 3750KV page |
| Dimensions | φ15.28 × 10.9 mm without the shaft, with 3.8 mm of shaft above the hub | GEPRC 5000KV page, GEPRC drawing |
| Shaft | Φ1.5 mm, standing 3.8 mm above the hub, which has 4 × M2 holes on a 5 mm circle for the prop | GEPRC 5000KV page, GEPRC drawing |
| Mounting | 4 × M2 holes on a 9 mm circle | GEPRC drawing |
| Magnets | N52H arc magnets | GEPRC 5000KV page, GEPRC 3750KV page |
| Bearings | Two bearings (GEPRC calls it a dual bearing design) | GEPRC 5000KV page, GEPRC 3750KV page |
| Leads | 50 mm, with a plug | GEPRC lead photo |
| In the box | 1 motor and 12 button-head screws (GEPRC lists the screws as M3×4, M3×5 and M3×7, but its drawing gives M2 holes in the base) | GEPRC 5000KV page, GEPRC 3750KV page |
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Base. GEPRC gives the base casing as 7075-T6 aluminium. (GEPRC 5000KV page, GEPRC 3750KV page)
- Magnets. N52H arc magnets. (GEPRC 5000KV page, GEPRC 3750KV page)
- Bearings. Two bearings, which GEPRC says keep it better balanced. (GEPRC 5000KV page)
How fast it spins
KV is the motor’s no-load speed per volt. With nothing on the shaft, the 5000KV 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.
| Battery | Volts | No-load rpm (KV × V) | Electrical frequency | ESC steps per second |
|---|---|---|---|---|
| 4S nominal | 14.8 | 74,000 | 7,400 Hz | 44,400 |
| 4S full | 16.8 | 84,000 | 8,400 Hz | 50,400 |
| 6S nominal | 22.2 | 111,000 | 11,100 Hz | 66,600 |
| 6S full | 25.2 | 126,000 | 12,600 Hz | 75,600 |
A 12-pole rotor has 6 pole pairs, so every turn of the shaft is 6 electrical cycles, and a six-step ESC switches the phases 36 times per turn.
About the 3D model
A generic outrunner drawn from GEPRC’s published sizes: the 12 × 4 mm stator, 15.28 mm bell, 10.9 mm height, 1.5 mm shaft, 9 mm mounting circle and 9 teeth and 12 magnets. Anything GEPRC 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
- GEPRC: GR1204 5000kv Motors (product page, with the spec list). Retrieved Oct 19, 2026.
- GEPRC: GR1204 3750KV Motors (product page, with the same spec list). Retrieved Oct 19, 2026.
- GEPRC: GR1204 product drawing (image on both product pages). Retrieved Oct 19, 2026.
- GEPRC: GR1204 5000KV product photo (first gallery image). Retrieved Oct 19, 2026.
- GEPRC: GR1204 from above, showing the ten-spoke top (gallery image). Retrieved Oct 19, 2026.
- GEPRC: GR1204 with its lead, 50 mm to the plug (gallery image). Retrieved Oct 19, 2026.
- GEPRC: GR1204 on a scale reading 6.0 g with its lead and plug (gallery image). Retrieved Oct 19, 2026.
