1.6 to 2.5-inch micro FPV motor
GEPRC GR1105
A 5.9 g 1105 for 1.6 to 2.5-inch micro quads; on GEPRC’s 12 V bench the 5000KV pulls 120 g at full throttle on a KingKong 65 mm prop and the 6000KV 150 g.
- 1.6 to 2.5-inch micro quads
- 2S–4S (5000KV) or 2S–3S (6000KV)
- 1.6 to 2.5-inch props
The spin is an illustration: the model turns at 1/600 of the no-load speed, and it is a generic 1105 motor drawn from GEPRC’s published sizes, not its exact design. Thrust, current and power are GEPRC’s bench figures for the KingKong 65 mm prop at 12 V, read straight across between its throttle steps. Its data starts at 40% throttle.
- Max thrust
- 120 g
- KingKong 65 mm prop, 12 V
- Weight
- 5.9 g
- GEPRC’s scale photo shows it with its leads
- Peak current
- 3.4 A
- full throttle
- Max power
- 41 W
- full throttle
Plain links: we earn nothing from them.
What it pulls
GEPRC’s own bench test, one line per prop. Drag across the chart to move the throttle; the model above follows.
At 60% with the KingKong 65 mm: 53 g of thrust, 1.8 A, 21 W, 2.53 g per watt.
On your quad
0.7 : 1
Thrust to weight at full throttle: four motors pull 480 g with the KingKong 65 mm at 12 V.
At 60% throttle they pull 212 g, 0.3 times the quad’s weight.
All-up weight is the quad ready to fly, with its battery and camera. The thrust is the maker’s static bench figure; in the air it is lower.
What you get
150 g on 3S
The 6000KV pulled 150 g at full throttle on a KingKong 65 mm prop at 12 V, drawing 5.17 A.
Source: GEPRC load table
N52H magnets
GEPRC uses N52H magnets, which it says resist high temperatures and stay in place.
Source: GEPRC magnet image
NSK bearings
Japanese NSK bearings, which GEPRC says keep the motor running smoothly.
Source: GEPRC bearing image
9 × 9 mm base
Four M2 holes on a 9 mm circle, on a base GEPRC calls lightweight and says helps heat dissipation.
Source: GEPRC drawing, GEPRC base image
What to pair it with
Our reading of GEPRC’s numbers, so your build matches what the motor was tested with.
- ESC
- GEPRC gives no ESC rating. Its tables peak at 4.88 A (5000KV) and 6.75 A (6000KV), both on the DALRC Q2035C at 12 V. (GEPRC load table, GEPRC load table)
- Props
- 1.6 to 2.5-inch. GEPRC tested both KVs on an EMAX 2035, a DALRC Q2035C and a KingKong 65 mm; the 65 mm prop pulled the most at full throttle (120 g and 150 g) on less current than the 2-inch props. (GEPRC version image, GEPRC load table, GEPRC load table)
- Battery
- 2S–4S for the 5000KV, 2S–3S for the 6000KV. (GEPRC version image)
- Frame
- Four M2 holes on a 9 × 9 mm pattern. (GEPRC drawing)
Where to buy
- GEPRCthe maker’s store; 5000KV or 6000KV, same price; both out of stock when checked$10.60seen 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 6000KV) | GEPRC product page, GEPRC version image |
| Stator | 11 × 5 mm (1105) (from the size in GEPRC’s name) | GEPRC product page |
| Battery | 2S–4S LiPo (5000KV); 2S–3S (6000KV) | GEPRC version image |
| Weight | 5.9 g (GEPRC’s scale photo shows it with its leads) | GEPRC weight photo |
| Dimensions | φ14.2 × 14.6 mm with the shaft; 12.7 mm without it, with 1.9 mm of shaft above the top | GEPRC drawing |
| Shaft | 1.5 mm, standing 1.9 mm above the top; four M2 holes on a 5 mm circle in the top of the bell | GEPRC drawing |
| Mounting | 4 × M2 holes on a 9 mm circle (9 × 9 mm) (GEPRC writes Φ9 ± 0.05) | GEPRC drawing |
| Magnets | N52H | GEPRC magnet image |
| Bearings | NSK | GEPRC bearing image |
Bench data
Redrawn from GEPRC’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.
5000KV on 2S–4S, 12 V3 props
| Prop | Throttle | Current (A) | Thrust (g) | Efficiency (g/W) | Power (W) |
|---|---|---|---|---|---|
| KingKong 65 mm | 40% | 1.01 | 21 | 1.73 | 12.2 |
| 60% | 1.75 | 53 | 2.53 | 21 | |
| 80% | 2.48 | 91 | 3.05 | 29.8 | |
| 100% | 3.37 | 120 | 2.96 | 40.5 | |
| DALRC Q2035C | 40% | 1.22 | 27 | 1.83 | 14.7 |
| 60% | 2.32 | 58 | 2.08 | 28 | |
| 80% | 3.53 | 89 | 2.09 | 42.5 | |
| 100% | 4.88 | 113 | 1.92 | 58.8 | |
| EMAX 2035 | 40% | 1.21 | 24 | 1.65 | 14.6 |
| 60% | 2.24 | 51 | 1.9 | 26.9 | |
| 80% | 3.39 | 79 | 1.93 | 40.8 | |
| 100% | 4.61 | 101 | 1.82 | 55.5 |
Source: [0], GEPRC load table
6000KV on 2S–3S, 12 V3 props
| Prop | Throttle | Current (A) | Thrust (g) | Efficiency (g/W) | Power (W) |
|---|---|---|---|---|---|
| KingKong 65 mm | 40% | 1.58 | 33 | 1.74 | 19 |
| 60% | 2.76 | 74 | 2.24 | 33.2 | |
| 80% | 3.88 | 116 | 2.49 | 46.7 | |
| 100% | 5.17 | 150 | 2.4 | 62.6 | |
| DALRC Q2035C | 40% | 1.88 | 39 | 1.72 | 22.7 |
| 60% | 3.47 | 73 | 1.75 | 41.8 | |
| 80% | 5.1 | 108 | 1.76 | 61.5 | |
| 100% | 6.75 | 131 | 1.6 | 81.8 | |
| EMAX 2035 | 40% | 1.88 | 35 | 1.55 | 22.7 |
| 60% | 3.52 | 68 | 1.61 | 42.4 | |
| 80% | 5.07 | 102 | 1.67 | 61.2 | |
| 100% | 6.65 | 122 | 1.51 | 80.7 |
Source: GEPRC load table
Inside the motor
A brushless outrunner: the coils stand still in the middle and the magnets spin around them. From the top down:
- Bell. Black, with a gunmetal four-armed top carrying four M2 holes, over N52H magnets. (GEPRC magnet image, GEPRC drawing, GEPRC product photo)
- Base. A four-armed base that GEPRC calls lightweight and says helps heat dissipation. (GEPRC base image)
- Bearings. NSK bearings. (GEPRC bearing image)
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 11 × 5 mm stator, 14.2 mm bell, 12.7 mm height, 1.5 mm shaft and 9 mm mounting circle. 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: GEP-GR1105 5000/6000kv Motor (product page; its description is images only). Retrieved Oct 19, 2026.
- GEPRC: GR1105 5000KV and 6000KV with the props and batteries GEPRC recommends (image on the product page). Retrieved Oct 19, 2026.
- GEPRC: GR1105 magnets, N52H (image on the product page). Retrieved Oct 19, 2026.
- GEPRC: GR1105 bearings, NSK (image on the product page). Retrieved Oct 19, 2026.
- GEPRC: GR-1105 product basic information, first part: 5000KV at 12 V on an EMAX 2035, a DALRC Q2035C and a KingKong 65 mm, 40–100% throttle (image on the product page; the voltage column is headed “(A)” but reads 12). Retrieved Oct 19, 2026.
- GEPRC: GR-1105 product basic information, second part: the rest of the 5000KV KingKong 65 mm table and 6000KV at 12 V on the same three props, 40–100% throttle (image on the product page). Retrieved Oct 19, 2026.
- GEPRC: GR1105 design engineering drawing (image on the product page). Retrieved Oct 19, 2026.
- GEPRC: GR1105 on a scale, 5.9 g with its leads (image on the product page). Retrieved Oct 19, 2026.
- GEPRC: GR1105 base, described as lightweight and helping heat dissipation (image on the product page). Retrieved Oct 19, 2026.
- GEPRC: GR1105 5000KV product photo (first gallery image). Retrieved Oct 19, 2026.
- GEPRC: two GR1105 motors from above, with their leads (gallery image). Retrieved Oct 19, 2026.
