

4-in-1 ESCs
Skystars KO40 BLHeli_S 20×20 4-in-1 ESC
₹3,059Incl. GST
SKU SKYSTARS-KO40-20X20-4IN1
Mounting Size: 20x20ESC Current: 40 AInput Voltage: 3–6SESC Firmware: BLHeli_S
Free standard shipping on orders of ₹999 and above. Pan India delivery from Gurugram, Haryana.
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Product details
The Skystars KO40 is a compact 40A 4-in-1 ESC on the 20x20mm mounting standard, suited to 3-inch cinewhoops, 4-inch micro long-range platforms and lightweight 5-inch freestyle builds. It runs BLHeli_S firmware for smooth throttle resolution on 3-6S packs.
Key features
- Delivers 40A continuous current per channel with a 45A peak rating for up to 10 seconds.
- Wide 3-6S LiPo input range covers 4S micros and 6S freestyle setups on one board.
- Native BLHeli_S support for DShot300 and DShot600 protocols.
- 20x20mm mounting pattern with M2 holes keeps the footprint compact in tight stacks.
Specifications
- Input voltage: 3-6S LiPo
- Continuous current: 40A
- Peak current: 45A (10s)
- Firmware: BLHeli_S
- Mounting: 20x20mm (M2 holes)
- Dimensions: 31 x 30 x 6.9mm
- Weight: 5.4g
Check that your flight controller shares the 20x20mm M2 mounting pattern and that the wiring harness pinout matches before installing this ESC on a 3 to 5-inch build.
| Mounting Size | 20x20 |
|---|---|
| ESC Current | 40 A |
| Input Voltage | 3–6S |
| ESC Firmware | BLHeli_S |
| Made in India | No |
| Brand | Skystars |
| Weight | 5.4 g |
| Battery Connector | XT-60 |
| BEC | No |
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