Flywoo GOKU F411 V2.1 F4 Flight Controller w/ Onboard LED & BS 20A 2-4S / 35A 2-6S BL_S 4In1 ESC Stack for RC FPV Racing Drone

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Product Details


Brand: Flywoo
Model: GOKU F411 V2.1 Stack
Item Name: F4 Flight Controller & 20A/35A 4in1 ESC & VTX Stack

GOKU F411 V2.1 Flight Controller?

MCU: STM32F411
IMU: MPU6000 (SPI)
USB VCP Driver (all UARTs usable simultaneously; USB does not take up a UART)
2 hardware UARTS (UART1,2)
2 Software serial port
1 I2C port for compass/baro
Onboard LED:WS2812*8(Flight Controller*4/ESC*4)
Supports serial receivers (SBUS, iBus, Spektrum, Crossfire) only.
PPM and PWM receivers are not supported.
Onbord 8Mbytes for Blackbox logging
5V Power Out: 2.0A max
3.3V Power Out: 0.5A max
Dimensions: 23.5×23.5mm
Mounting Holes: Standard 16mm square to center of holes
Weight: 6.5g

Optional BS 20A / 35A 4in1 ESC

Model: GOKU BS

Item Name: 16x16mm 20A / 35A BLheli_S 2-6S 4in1 ESC

Optional Version: 20A / 35A

Input Voltage: 2-4S ( for 20A Version); 2-6S ( for 35A Version)

Con. Current: 20A ( for 20A Version) 35A ( for 35A Version)

Burst Current: 25A ( for 20A Version) 40A ( for 35A Version)

Firmware: BLHELI_S


Mounting Hole: 16x16mm, M3

Weight: 2.5g

Support BLheli / BLHELI_S
Support PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600


– Flywoo Goku F4 35A 16X16 STACK, the smallest size! Large output current!
– If you don’t like AIO, but want to build an ultralight 3” -5” racing quads , it can definitely meet your FPV needs!
– This will be the best ultralight mini stack in 2021!
– Flight Controller uses F411 chip, 2 hardware serial ports, 2 software serial ports, 4 WS2812 LEDs, black box, I2C, 5V/2A BEC.
– ESC uses BLS , supports DSHOT600 built-in current sensor, supports up to 6S input, and maximum current is 35A.
– High-performance processors, powerful current output.

Package Included:
1x Flywoo GOKU F411 V2.1 Flight Controller
1x Flywoo BS 20A OR 35A 4in1 ESC
1x bag of Screws

Item Specifics
Brand Name:
Composite Material
Tool Supplies:
Assembled class
Upgrade Parts/Accessories:
Flight Controller & Stack
RC Parts & Accs:
Flight Controller & Stack
Technical parameters:
Value 2
Model Number:
Flywoo GOKU F411 V2.1
Remote Control Peripherals/Devices:
Flight Controller & Stack
For Vehicle Type:
Four-wheel Drive Attributes:
Flight Controller & Stack
Shipping & Payment


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.

If you received the wrong item you can request a refund or a reshipment.

If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of SAJAKS Favorites (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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