Kit skky Naked O4 Pro

Upgrade your O3 frame with an DJI O4 Pro Air Unit and save weight with the skky Naked O4 Pro Kit

Highlights
- Save 9-16g (19-26g weight for the naked O4 Pro vs. 35g of standard O4 Pro)
- Fully compatible with O3 frames (same 20mm camera width/height and mounting holes than O3)
- No additional hardware required (reuse O4 Pro screws plus standard M2x10/14 screws)
- ND Filter (O4 Pro/Avata 2 and Flywoo GoPro)

Modular design - 3 different configurations
- O3 Upgrade: Mount the O4 Pro in an O3 frame and use the standard O3 camera mounting
- Light: Naked Camera and VTX
- Ultra Light: Without USB / SD-Card

Kit includes
- Camera Mount O3 Upgrade 2 Screws (TPU)
- Camera Mount O3 Upgrade 4 Screws (TPU)
- Camera Mount O3 Upgrade Angled (TPU)
- Camera Back Cover (TPU)
- Camera Back Cover Angled (TPU)
- Camera Mount Light 2 Screws (TPU)
- Camera Mount Light 4 Screws (TPU)
- Camera ND Filter Ring O4 Pro (PETG)
- Camera ND Filter Ring Flywoo GoPro (PETG)
- Camera M2 Nut (PETG)
- VTX Mount Light (PETG)
- VTX Mount Ultra Light (PETG)
- VTX Connector Locker (PETG)
- VTX Antenna Locker (PETG)

Compatibility
- Air Unit: DJI O4 Pro Air Unit with the thin camera design - see warning below. (standard/light O4 Air Unit not ed)
- ND Filters: O4 Pro / Avata 2 and Flywoo GoPro ND Filters
- Frame: Most frames ing O3 (O3 Camera Mounting, 25.5x25.5 Stack, 14mm high VTX)

WARNING
DJI uses two different designs for the O4 Pro Camera:
- Thin design is ed (DJI production batches 2024/12, 2025/02 and 2025/03)
- Thick design is currently NOT ed (DJI production batch 2025/01 )
See photos for how to identify the thin vs. thick design. You can check the production batch on the O4 Pro packaging next to the serial number. Please let us know which design and batch you have as we're trying to understand this better.

ASSEMBLY VIDEO ON YOUTUBE
Detailed assembly and coating video guide available on YouTube

Assembly instructions for Camera
1. Disassemble the O4 Pro Camera - see video
2. Insert M2 nuts into the Camera Mount holes (2-4 nuts)
3. Bend the Camera Mount open and put it carefully around the middle section of the O4 Pro lens. Be careful not to break the small locator pins (even though they are not required for the O4 Pro standard case)
4. Push the Camera Mount together so that it is fully closed
5. Fix the ND Filter Ring onto the Camera Mount with the four small screws included in the O4 Pro Lens
6. Insert the coaxial cable
7. Snap the Back Cover on (optional for O3 Upgrade)
8. Fix the Camera to your frame with 2-4 M2 screws (use the screws included with the DIJ O4 Pro Air Unit or with your frame)

Assembly instructions for VTX
1. Disassemble the O4 Pro VTX - see video
2. Insert the SD-Card/USB-PCB into the VTX Mount and fix it with the 4 original small screws
3. IMPORTANT: Put the two original thermal tapes onto the VTX chipsets against overheating (see pictures)
3. Put the VTX on top of the VTX Mount and fix it with the 2 original small screws
4. Connect the ribbon connector of the SD-Card/USB-PCB to the VTX
5. Mount the naked VTX to your frame onto an 25.5x25.5mm stack by fixing it with M2x14 screws (for Light) or M2x10 screws (for Ultra Light)
6. Fix the Connector-PCB to the Connector Locker by using the original 2 small screws. You can leave the original scotch on as additional spacer for the Coax Connector
7. Connect the ribbon connector of the Connector-PCB to the VTX
8. Add the Connector Locker on top of the VTX Mount by further tightening the M2 screws
9. Fix the two antennas to the VTX
10. Add the Antenna Locker on top by further tightening the screws

Overheating performance
- IMPORTANT: The 2 original thermal tapes need to be placed onto the hottest chipsets (see pictures) and the VTX needs to be exposed to sufficient airflow from the propellers
- Flying and 4K recording: No overheating
- Low-power mode (5-9 mbps): ca. 4min until overheating
- High-power mode (50-60 mbps): ca. 1min until overheating

Coating (optional)
- O4 Pro already has some coating on the PCBs from DJI
- Possible to add a second coating for additional water protection while using this naked kit
- Waterproofing by Dread_FPV recommended: light (<0.5g) and holds better over time than MG 422C
- Do not coat the chipsets to allow for cooling. Similar overheating performance measured with coating
- See our YouTube video for coating instructions

Making an O4 Pro naked requires handling small and sensitive electronics. Be extra careful to not accidentally damage your air unit. We are not liable for any damages.

ND Filter Test for O4 Pro
We tested eight ND Filters for the DJI O4 Pro for vignetting, flare, fit, weight etc. You can find the winner and all the test results on our website www.skkyfpv.com

Looking for a sub 250g frame for your new O4 Pro? Check-out the skky35 with or without prop guards.

Visit www.skkyfpv.com for more information. our community on Discord and Instagram.

Updates
- Jan 17: Release of preliminary design (v0)
- Jan 20: Added Ultra Light option
- Jan 22: Release of refined VTX design (v1)
- Jan 23: Reduced hight of VTX mount (v1.1)
- Feb 1: Added an ND Filter Ring for Avata 2 ND Filters and a Light Camera Mount with four screw holes compatible with O3 frames
- Mar 6: Added M2 Nut to print in PETG / PLA / Nylon
- Mar 8: Improved ND Filter Mount to not be visible in vertical orientation (v1.1) and added angled version of O3 Upgrade Camera Mount for tighter frames
- Mar 9: Increased width of M2 nut holes in camera mounts to 2mm (v1.2)
- Apr 7: Improved design of O4 Pro ND Filter Mount to more O4 Pro ND Filters. Reduced hight of VTX Antenna Locker to better hold the O4 Pro antennas (v1.3). Added warning that the "thick" O4 Pro camera design from DJI's production batch 2025/01 is currently not ed. Please let us know which design and batch your O4 Pro camera has. We're trying to understand DJI's production pattern better. See picture / info on Cults.
- May 2: Improved O4 Pro ND Filter Mount for minimal flare, vignetting and optimal fit. See our test of eight O4 Pro ND Filters on www.skkyfpv.com for the best O4 Pro ND Filter

• Imprimez le de caméra en TPU (séchage recommandé) sauf pour la bague du filtre ND et les écrous M2 où le PETG/PLA+ est recommandé si vous prévoyez d'utiliser des filtres ND - sinon le TPU est parfait.

• Imprimez le VTX en PETG/PLA+** (séchage recommandé). Le PETG/PLA+ est nécessaire pour que les petites caractéristiques (par exemple les trous de vis) fonctionnent.

• 15% de remplissage (paramètres par défaut)

• Aucun n'est requis pour les pièces

• Tous les autres paramètres par défaut (dans BamuLab Studio)

• Toutes les pièces sont déjà orientées de manière optimale pour l'impression dans les fichiers STL

• Imprimez le de caméra à la verticale (debout) de la manière dont il est déjà orienté dans le STL