The iFlight Blitz ATF435 Stack/Combo provides dependable performance and efficient control of your 2-6S powered quadcopter. This 30x30 stack/combo features an ATF435 FC and 55A 8Bit 4in1 ESC to give you responsive controls and reliable power delivery. Fly worry-free and explore new heights. This flight controller comes with plug-in ports for 9V VTXs, LED/Buzzer, receiver, camera, & the ESC. The NEW ATF processors allow for a product like this that is feature-rich and comes with a 55Amp ESC, which is perfect for those amp-hungry builds.
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Top highlights
Premium Combo: AT32F435 FC with ICM42688 gyro + 55A (65A burst) 2-6S ESC.
32MB Blackbox: Extensive logging for precise tuning and analysis.
6S Power & Sensing: Handles high voltage with accurate current monitoring (200A rate).
Dual BEC & Lightweight: 5V/2.5A & 9V/2A outputs; total stack weight only ~22.5g.
Full Protocol Support: SmartAudio, DShot, Multishot & Blheli_S/Bluejay firmware.
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Description
FAQ
Push Your 6S Build Hard Without Power Cutouts
The BLITZ E55S 4-in-1 ESC delivers 55A continuous current with 65A burst support, giving your quad the power headroom needed for hard throttle punches, fast recoveries, and amp-hungry 6S setups.
Instead of worrying about unstable throttle response or power drops mid-flight, you can focus on sending bigger lines with more confidence.
Feel More Connected to Your Quad in Every Freestyle Move
Powered by the AT32F435 processor and ICM42688 gyro, the BLITZ ATF435 Stack delivers smoother signal processing and faster flight response compared with older budget flight controllers.
From split-S transitions to tight proximity lines, the quad feels more locked-in and controlled when pushing technical freestyle moves.
Cleaner Wiring. Easier Tuning. Less Bench Time.
The BLITZ ATF435 Stack includes plug-in connections for the ESC, receiver, camera, LED/Buzzer, and 9V VTX systems to simplify the build process and reduce cable clutter.
With built-in 32MB Blackbox storage, tuning and analyzing flight behavior also becomes much easier — helping you spend more time flying instead of sitting at the workbench.
A Solid Choice for Lightweight DJI O3 Freestyle Builds
With dual BEC outputs, DJI-ready compatibility, full protocol support, and a lightweight stack weight of approximately 22.5g, the BLITZ ATF435 Stack fits naturally into modern 5-inch O3 freestyle and cinematic builds.
Whether you're building a daily freestyle quad or a lightweight HD ripper, the stack delivers the balance of performance, simplicity, and reliability that modern FPV pilots look for.
FC Specifications
MCU: AT32F435RGT7
Gyro: ICM42688
Barometer: DPS310
OSD Chip: AT7456E
Flash: 32MB (Blackbox flash)
UARTS: 6
Motor outputs: 4x (SH1.0 connector)
I2C serial: SDA / SLA pads
Smartaudio / IRC Tramp VTX protocol supported
LED controller: Yes
Beeper pad: Yes
Firmware target: IFLIGHT_BLITZ_ATF435
Mount pattern: 30.5*30.5mm / 4mm PCB hole diameter
Note: iFlight product is for fun purposes only and does not support autonomous flight.
Reviews
B*************K
Verified
The ATF435 chip is very stable. I’m running this on a 5-inch freestyle build and the blackbox logging is super clean. Plug-and-play features with DJI O3 worked perfectly.
Specification：ATF435 E55S 2 6S
M*********R
Verified
Superbe qualité. The ATF435 chip is very stable. I’m running this on a 5-inch freestyle build and the blackbox logging is super clean. Solid connection and the plug-and-play features with DJI O3 worked perfectly.
Specification：ATF435 E55S 2 6S
M**c
Verified
Superbe qualité. The ATF435 chip is very stable. I’m running this on a 5-inch freestyle build and the blackbox logging is super clean. Solid connection and the plug-and-play features with DJI O3 worked perfectly.
Specification：ATF435 E55S 2 6S
R***********l
Verified
Very clean setup and works flawlessly under hard freestyle. No desync issues and overall performance feels very stable.
Specification：ATF435 E55S 2 6S
P**************c
Verified
Cleanest layout I've worked with in a while. The plug-and-play setup for DJI O3 is a massive time saver. Everything feels solid and the mounting dampeners provided are high quality. Worth every penny for a high-end build.
Specification：ATF435 E55S 2 6S
R******d
Verified
arrived fast and packaging was solid. solder pads are nice and big, easy to work with. works great out of the box, no issues so far.
Specification：ATF435 E55S 2 6S
Additional reviews after 12
days
been flying 2 weeks now, still very stable and responsive. good experience with mepsking.
C********t
Verified
good value for what you get. strong performance and no desync issues. also nice that DJI plug is included, saved me time.
Specification：ATF435 E55S 2 6S
Additional reviews after 10
days
had a crash and one wire came loose, contacted support and they replied quick with help. appreciate that.
B************V
Verified
Just finished installing this stack and it looks really clean in my build. Components feel premium and layout is well designed. Everything was well packed and arrived in perfect condition.
Specification：ATF435 E55S 2 6S
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FAQFeel free to ask us any questions
ASK A QUESTION
Q1: What is the main advantage of the 32MB blackbox?
A: The 32MB blackbox storage is a significant upgrade for pilots focused on competitive tuning and analysis. Unlike smaller 16MB chips, it allows for logging all essential flight data (gyro, PID loops, motor outputs, etc.) at the highest sampling rates for several full battery packs without running out of space.
Q2: How does the ICM42688 gyro improve flight performance compared to common alternatives like the BMI270?
A: The ICM42688 gyro offers significantly lower noise and higher stability. This provides a cleaner signal to the flight controller, enabling tighter filtering, more aggressive PID tuning, and ultimately more precise, responsive control during high-speed maneuvers.
Q: What is the iFlight BLITZ ATF435 Stack (E55S 2-6S) used for in FPV drones?
A: This FPV stack combines an F4 flight controller and a 55A 4-in-1 ESC, designed for 5-inch freestyle and racing drones requiring stable and powerful performance.
Q: Is the iFlight BLITZ ATF435 stack good for 5 inch FPV freestyle drones?
A: Yes, it is optimized for 5-inch freestyle drones, offering smooth flight control and strong ESC performance for aggressive flying.
Q: Does the iFlight ATF435 flight controller support Betaflight firmware?
A: Yes, the F4 flight controller is fully compatible with Betaflight, supporting features like OSD, RPM filtering, and advanced tuning.
Verified
