Quick Answer
The GEPRC Vapor is a 5-inch FPV drone line split into two frame geometries: the Vapor-D (Deadcat, props out of view for cinematic) and the Vapor-X (True-X, symmetric for freestyle). Each comes in analog, DJI O4 Pro, or frame-only "WTFPV" variants. We stock all six. The Vapor-D5 O4 Pro with GPS is our pick for cinematic pilots who want to fly immediately. The Vapor-X5 WTFPV GPS Edition is the better choice if you already own a VTX system and want to build it your way.
D5 vs X5: Deadcat or True-X?
This is the first decision, and it affects everything else. The Vapor-D uses a Deadcat (DC) frame geometry where the front arms sweep forward at different angles. This pulls the front propellers out of the camera's field of view, which matters enormously if you're shooting 4K with the DJI O4 Pro. The trade-off: DC frames have asymmetric motor positioning, which introduces a slight yaw imbalance that PID tuning compensates for but never fully eliminates.
The Vapor-X uses a True-X geometry where all four motors sit at equal distance from centre. This gives perfectly symmetrical flight characteristics, which freestyle pilots prefer for predictable flips, rolls, and power loops. The downside: your props are visible in the camera frame at wide angles, especially with a GoPro mounted up top.
Our take: if you're buying a DJI O4 Pro quad for cinematic footage, get the D-series. The prop-free footage is worth the minor yaw asymmetry. If you're ripping freestyle and the camera is secondary, the X-series flies cleaner.
The Analog Option: Vapor-X5 Analog
The Vapor-X5 Analog is the budget entry into the Vapor line. It pairs a GEP-F411-35A AIO flight controller with a 35A BLheli_S ESC and GEPRC SPEEDX2 2207 motors. The camera is a Runcam Phoenix 2 with an adjustable analog VTX up to 600mW on 5.8GHz.
The stack here is notably lighter-duty than the O4 Pro variants. The F411 processor has fewer UARTs and less processing headroom than the F722 used in the digital versions. For pure analog freestyle, that's fine. But if you plan to add GPS, a Beeper, or other peripherals later, the F411's limited UART count becomes a constraint.
We recommend this one for pilots who already fly analog, already have the goggles, and want a capable 5-inch True-X frame without paying for digital hardware they won't use.
The Digital Flagships: D5 and X5 O4 Pro
Both the Vapor-D5 O4 Pro and Vapor-X5 O4 Pro ship with the full DJI O4 Air Unit Pro system pre-installed. They share the same electronics stack: GEP-F722-HD v2 flight controller (STM32F722, ICM42688-P gyro via SPI), TAKER H60_BLS 60A 4-in-1 ESC with Bluejay 0.21.0 firmware at 48kHz, and GEPRC SPEEDX2 2207E 1960KV motors spinning Gemfan 5136 props.
GEPRC redesigned the Vapor series specifically around the O4 Pro's larger form factor. The CNC aluminium lens housing and vibration-damping silicone between the camera mount and frame address the resonance issues that plagued earlier O4 mounts. Oscar Liang's review confirmed virtually zero jello, even at full throttle.
Both O4 Pro variants come with an M10 GPS module for Betaflight Rescue Mode. The GPS achieves a 3D fix in under a minute, which is genuinely impressive for a BNF quad. For long-range flights with a 6S Li-ion pack, this is the difference between losing your drone and having it fly home on its own.
| Spec | D5 O4 Pro | X5 O4 Pro |
|---|---|---|
| Frame Geometry | Deadcat (DC) | True-X |
| Wheelbase | 230mm | 228mm |
| Flight Controller | GEP-F722-HD v2 | GEP-F722-HD v2 |
| ESC | TAKER H60_BLS 60A | TAKER H60_BLS 60A |
| Motors | SPEEDX2 2207E 1960KV | SPEEDX2 2207E 1960KV |
| Props | Gemfan 5136 | Gemfan 5136 |
| VTX System | DJI O4 Air Unit Pro | DJI O4 Air Unit Pro |
| GPS | M10 (included) | M10 (included) |
| Weight (no battery) | ~428g | ~430g |
| Arm Thickness | 5.0mm carbon | 5.0mm carbon |
| Firmware | Betaflight 4.5.1 | Betaflight 4.5.1 |
Real-world numbers from Oscar Liang's testing: hover throttle around 19%, top speed approximately 165km/h on 6S, and flight times of 3-4 minutes aggressive or 12-13 minutes cruising with a 6S 4000mAh Li-ion pack. The current sensor overestimates amp draw out of the box; the fix is adjusting the current sensor scale to 195 in Betaflight.
The Frame Kits: WTFPV Variants
Three of the six Vapor products we carry are "WTFPV" editions, which is GEPRC's name for frame-and-electronics kits that ship without a VTX or camera. These are for pilots who already own a DJI O4 system, a Walksnail Avatar kit, or an analog setup and don't want to pay for hardware they'll desolder anyway.
The D5 O4 Pro WTFPV and X5 O4 Pro WTFPV are functionally identical to their BNF counterparts in terms of frame and stack, but without the DJI O4 Air Unit Pro installed. The price difference is significant: the WTFPV kits cost around £150 versus £350-£390 for the full BNF versions.
The X5 WTFPV GPS Edition is slightly different. It uses the same F722 FC and 60A ESC as the O4 Pro versions but comes with GPS pre-installed. At around £170, it's the best value if you want a True-X frame with premium electronics and GPS, and you're supplying your own video system.
Which One We'd Actually Buy
For cinematic 4K footage: Vapor-D5 O4 Pro w/GPS
If you're starting from nothing and want to shoot cinematic footage with the DJI O4 Pro, the D5 O4 Pro BNF is the complete package. Deadcat geometry keeps props out of frame, the O4 Pro delivers 4K/120fps, and the M10 GPS gives you Rescue Mode as a safety net. Bind, charge a 6S pack, and fly.
For freestyle on a budget: Vapor-X5 Analog
The X5 Analog at around £230 is the cheapest way into a serious 5-inch Vapor. True-X geometry, SPEEDX2 2207 motors, and ELRS 2.4G built in. You'll need analog goggles, but the quad itself is ready to rip.
For pilots who already own a DJI O4 system: X5 WTFPV GPS
If you crashed your previous quad and your O4 Air Unit Pro survived, the X5 WTFPV GPS Edition gives you a fresh True-X frame, F722 stack, 60A ESC, and GPS for around £170. Transplant your O4 unit and you're airborne for less than half the cost of a new BNF.
For long-range exploration: D5 O4 Pro w/GPS + Li-ion
The same D5 O4 Pro we recommend for cinematic also excels at long-range. Swap the 6S 1100mAh LiPo for a 6S 4000mAh Li-ion pack and you get 12-13 minutes of flight time. The M10 GPS lock is fast and reliable, making Betaflight Rescue Mode genuinely useful rather than theoretical.
What to Watch Out For
Three things we'd flag from flying and building these:
The USB port cutout is tight. The side plate opening for the FC USB-C port is only about 11x6mm. Some USB cables won't fit without removing the side plate. Find a slim connector before you need it at the field.
USB power doesn't run the receiver or GPS. Unlike some FCs, the Vapor's USB connection only powers the flight controller itself. You need a LiPo connected to bind ELRS, configure the GPS, or test the O4 system. Plan your bench setup accordingly.
Receiver antenna placement is lazy. The stock ELRS antenna routing is functional for 1-2km but not optimised for long-range. If you're pushing distance, re-mount the antenna vertically on one side to avoid signal blockage from the frame and battery.
UK Regulations
All Vapor variants weigh over 250g without a battery (around 428-488g), which means they fall under the UK CAA's Operator ID requirement. You need an Operator ID (£11.83/year from the CAA) displayed on the drone, and a Flyer ID (free online test). The DJI O4 camera also triggers the 100g camera-drone threshold for registration, so there's no way around it.
For more on building and wiring a 5-inch quad, see our 5-inch build guide. For the analog-vs-digital decision in more depth, our comparison article covers the trade-offs. And if you're setting up a DJI O4 system for the first time, the O4 Air Unit guide walks through pairing, channels, and power settings.
Browse all our complete drones and BNF kits or all drones for more options.
FAQ
Q: What battery do I need for a GEPRC Vapor?
A 6S LiPo between 1100mAh and 1800mAh. For freestyle, a 6S 1300mAh is the sweet spot. For long-range, a 6S 4000mAh Li-ion pack extends flight time to 12+ minutes. The connector is XT60 on all variants.
Q: Do the WTFPV versions come with a receiver?
The D5 and X5 WTFPV O4 Pro kits include the frame, FC, ESC, and motors but no receiver, VTX, or camera. The X5 WTFPV GPS Edition includes an ELRS receiver and GPS but still no VTX or camera. Check each product listing for what's included.
Q: Can I put an analog system on the O4 Pro frame?
Yes. The frame accepts standard 20mm or 30mm camera mounts. You'll need an analog VTX and camera, and you'll want to remove or bypass the O4 Pro mounting hardware. The F722 FC supports analog VTX via UART with SmartAudio or Tramp.
Q: What goggles work with the DJI O4 Pro versions?
DJI Goggles 3, DJI Goggles N3, and DJI Goggles Integra all pair with the O4 Air Unit Pro. See our Goggles 3 vs N3 guide for which pair is right for you.
Q: How fast does the GEPRC Vapor D5 fly?
Oscar Liang recorded approximately 165km/h top speed on 6S with the stock SPEEDX2 2207E 1960KV motors and Gemfan 5136 props. Hover throttle is around 19%, which gives excellent low-speed control for cinematic moves.