
Tower of F4 flight controller and 50A speed controller in a 30x30 stack
USD · Indicative unit price for reference. Volume and project pricing is provided in your quotation; MOQ and lead times vary by product.
Availability & Lead Times
Ships from Hong Kong · DAP or FOB Hong Kong.
Tracked worldwide delivery
DHL · FedEx · UPS · EMS, then air, sea or rail
Export License Ready
ECCN, CO, CI, PL, EUS docs
Product prices and shipping quotes do not include import duties, taxes or customs clearance fees — these are charged by the destination customs authority. Estimate them above, or read the import duties & VAT guide.
Genuine Products
Authorized distribution
Engineering support
Pre-sales selection and after-sales RMA
Secure, milestone-based payment
T/T 30/70 terms and irrevocable L/C over US$50,000. Funds follow agreed milestones — you never pay an unknown seller upfront.
Payment protectionVetted supplier, Aegisky as contracting window
Suppliers pass KYC/KYB and export-capability review; Aegisky — not an anonymous third party — is your single contracting and communication window.
View supplier profileExport compliance on every controlled order
ECCN classification, sanctions screening and end-use/end-user documentation are handled before quotation is finalised.
Export compliance14-day defective/DOA protection & warranty handling
Defective or dead-on-arrival items are accepted within 14 days via RMA; warranty claims and spare-parts support are handled through the trade desk.
Returns & warrantyComponent pricing is public. Sign in to see fleet pricing, save quotes, track orders and check out faster — creating a trade account takes about a minute.
Sign in to order →The Skystars F4 KO50 BLHeli_S 30x30 flight controller is a combination control board and ESC for quadcopters. It is an enhanced version of the popular F4 stack system, offering powerful features and reliable performance for your flight needs.
The stack includes the F4 flight control board and KO50 BLHeli_S speed controllers. The F4 control board is equipped with STM32F405 processor, which provides high performance and smooth flight experience. It supports various features such as OSD (On Screen Display), SmartAudio, RSSI (Receiver Signal Strength) and more.
KO50 BLHeli_S speed controllers offer high update rates and precise motor control. They have a capacity of up to 50A and support 3-6S LiPo batteries, allowing them to work with the most powerful quadcopters. BLHeli_S is the latest version of ESC software that provides smooth and responsive ESC control.
The Skystars F4 KO50 BLHeli_S stack has a 30x30mm form factor, making it compatible with a wide range of frames and quadcopter components. It also has a rich set of interfaces for connecting various sensors and accessories.
This stack is ideal for FPV enthusiasts and racing pilots who need powerful and reliable equipment to achieve high speeds and precise control. It is also suitable for both beginners and experienced pilots, thanks to its easy setup and flexible settings.
In conclusion, the Skystars F4 KO50 BLHeli_S 30x30 Stack is a reliable and powerful solution to control and regulate the speed of your quadcopters. It offers a wide range of features, compatibility and performance, making it a great choice for FPV flying enthusiasts.