SKU: 72593376302

Sub250 Redfox A3 F722 35A/45A 4in1 AIO Flight Controller for 2 to 3.5 inch Drones - Choose Version

Sale price$91.79 Regular price$101.99
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Description

Sub250 Redfox A3 F722 35A/45A 4in1 AIO Flight Controller for 2 to 3.5 inch Drones - Choose VersionIntroducing the Redfox A3 series flight controller, a new choice in lightweight FPV drones brought to you by the Sub250 team. Designed specifically for 2 to 3. 5 inch drones, it integrates the powerful computational capabilities of the F722 MCU to ensure exceptional flight performance. Featuring an independently designed Type C adapter board, it can be conveniently placed at any location on the frame for quick parameter adjustments. Onboard DJI 6 Pin

Introducing the Redfox A3 series flight controller, a new choice in lightweight FPV drones brought to you by the Sub250 team.
Designed specifically for 2 to 3.5-inch drones, it integrates the powerful computational capabilities of the F722 MCU to ensure exceptional flight performance.
Featuring an independently designed Type-C adapter board, it can be conveniently placed at any location on the frame for quick parameter adjustments.
Onboard DJI 6-Pin interface, offering direct connectivity to digital video transmission systems.
Equipped with four sets of UART ports, providing more possibilities for installation and upgrades. It also comes with a [email protected] BEC to meet the increasing demand for additional peripherals.
Sub250 is committed to combining “lightweight” and “high performance” to bring a brand new experience to the racing drone field. The Redfox A3 series flight controller helps you explore the perfect fusion of lightweight design and exceptional performance.

Check out all our Whoop Style AIO Flight Controllers and the rest of our Sub250 Products

Features:

  • STM32F722 MCU, powerful computing performance with high-speed and real-time response.
  • Reliable and durable BLHeli_32 35A/45A ESC supports up to 128khz PWM frequency.
  • Independently designed DJI 6PIN interface, directly connected to DJI digital video transmission system.
  • TypeC adapter board with boot button, SH1.0 5PIN direct plug, meeting the placement needs of various kinds of small frames.
  • 4 sets of complete UART ports provide more possibilities for installation and expansion, and the optimized pad design makes welding easier.
  • [email protected] BEC meets the demands of more peripheral devices.
  • Supports functions such as OSD parameter adjustment, GPS, LED, buzzer, etc.
  • Ultra-light weight of 8.7g, 25.5mmx25.5mm M3 mounting holes, suitable for most frames on the market.

FC Specifications:

  • MCU: STM32F722
  • IMU: ICM42688-P
  • Firmware Target Name: SUB250REDFOX722AIO
  • OSD Chip: AT7456E
  • Barometer: Built-in
  • UART: 6 sets (UART1, UART2, UART3 for Digital VTX SBUS receiver, UART4, UART5 for ESC telemetry, UART6)
  • External Buzzer: Supported
  • External LED: Supported
  • 6-Pin DJI Air Unit Plug: Supported
  • USB Port Type: SH1.0 5PIN to Type-C
  • BEC Output: 5V 2.5A
  • Mounting: 25.5mm x 25.5mm, φ3mm hole reduces to φ2mm with Anti-vibration Silicone Grommet
  • Dimension: 33.5mm(L) x 33.5mm(W) x 6.45mm(H) ,1.6mm Board Thickness
  • Weight:8.7g


ESC Specifications:

  • Continuous Current: 35A/45A
  • Burst Current: 45(10s)/55A(10s)
  • Power Input: 2~6S (LiPo Battery)
  • ESC Protocol: Dshot300, Dshot600
  • Current Sensor: Supported
  • ESC Firmware: BLHeli_32

Download the Installation Manual Here

Package Includes:

  • 1 x Redfox A3 35A/45A AIO
  • 1 x External USB-C Port Module (Wire Length:150mm)
  • 1 x 6Pin DJI Air Unit Connecting Cable
  • 5 x M2*6.5 Black Anti-vibration Silicone Grommets(4 x Pre-installed)
  • 5 x M2*6.5 Red Anti-vibration Silicone Grommets
  • 5 x M2x10 Screws
  • 8 x M2 Nylon Nuts
  • 1 x 35V 470uf Capacitor
  • 1 x XT30 16AWG 70mm Power Cable
  • 1 x Manual & Support Card
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 72593376302

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4.5 ★★★★★
Based on 26 reviews
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Nick
Los Angeles, US
★★★★★ 5
Love this ram mount kit
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121, Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
All i can say is wow. This is an amazing ram mount kit for my 22 Silverado custom. All the hardware is top notch. The metal is all powder coated black with a nice grey American flag. There are so places to be able to mount addition arms. The phone holder it comes with is solid aluminum with a nice tight spring. I rate this 10/10 and for the price you can not beat it or find another better. I didn’t use the adhesive on the bottom so i can’t speak on that but i can only imagine it is really good as well. Hands down is just as good as the super expensive bulletpoint mount you see advertised. Don’t hesitate to buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2026
A
Verified Purchase
Arthur Rivers
West Palm Beach, US
★★★★★ 4
Looks great
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
Fits great and is heavy enough to stay put. I used the adhesive backing to install as I did not want to drill into my truck but it still works well and I have had no issues with it popping out or anything else.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
L
Verified Purchase
Lawrence Crighton
Cuba, US
★★★★★ 5
Highly recommend!
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
It’s all metal! Even the arm that holds the phone!!! All metal!!!!! No cheap plastic! You can drill or clean and stick. 2 for mounting. No more breaking air vents and suction cups cheap plastic that falls off the window or rear view mirror holder that blocks your vision. This is definitely worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026
J
Verified Purchase
Joshua M.
Houston, US
★★★★★ 2
The concept is great, the item is sub par.
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
I bought this for a 2021 Silverado WT thinking I'd be able to screw this into the dash cubby as the adhesive wouldn't servive -50⁰ F Fairbanks winters. Beware, if you own this truck, you have to remove the entire dash assembly to include instrument cluster and infotainment system in order to screw this into the cubby. The cubby on this model is actually apart of the entire upper dash panel and cannot be removed separately as the instructions state. I decided I'd give the adhesive pad a try until I bought some self tapping screws but the mount is not contoured like my cubby, therefore it badly rocks. I don't recommend this to anyone with a 2021 Silverado WT unless they want to spend over 3 hours installing this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
Z
Verified Purchase
Zach Pike
Bozeman, US
★★★★★ 5
Highly recommend
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
Great fit, looks awesome! Very easy to install !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026

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