iFlight SucceX-E 45A V2 2-6S BLHeli_S 4in1 ESC Support DSHOT600 for FPV Racing Drone Review (2026)

Who this ESC is built for

This ESC is aimed at builders assembling a freestyle or racing quad on a budget who still want components from a known FPV brand rather than an unbranded board. The SucceX-E line has been a common choice in stacks pairing with iFlight's own flight controllers, but it works fine bolted onto a 30.5x30.5mm mounting pattern from any brand that follows the same standard, so it is not locked to a single ecosystem. Supporting 2-6S lipo input covers the range most freestyle and racing builds actually fly, from a lighter 4S setup to a punchier 6S build, so one ESC choice works across more than one battery configuration. It suits someone building their second or third quad who already knows they want BLHeli_S and DSHOT600 rather than a first time builder who might benefit from a more guided all in one flight stack with better documentation.

What the spec sheet covers

The board measures 36 by 43mm with 30.5 by 30.5mm mounting holes and weighs about 15 grams without wiring, keeping it in line with the standard 4in1 ESC footprint used across most modern freestyle frames. It is rated for a constant 45A per motor output with a 50A burst rating, and it runs on an STM32F051 MCU at 48MHz using BLHeli_S 16.X firmware, supporting DSHOT150, 300, 600, 1200, Multishot and Oneshot protocols. A current sensor is built in, useful for monitoring power draw in the flight controller's OSD, though there is no onboard BEC, so a separate 5V source is needed for anything that requires one. The package includes the ESC itself, an 8 pin connector wire, two filter capacitors, silicone grommets for vibration dampening, and an XT60 connector with 14AWG wire for the main battery lead.

Building with it and keeping it running

Soldering the 8 pin harness to a matching flight controller is the standard way to wire this ESC into a stack, and the included capacitors should be soldered across the battery input to reduce electrical noise that can show up as interference on the video feed. BLHeli_S firmware can be flashed or reconfigured through BLHeli Configurator once wired up, which is worth doing before a first flight to confirm motor direction and protocol settings match the flight controller. Because there is no onboard BEC, camera or VTX power needs to come from elsewhere in the stack, so check compatibility before assuming this ESC alone will run every accessory. Day to day, the biggest maintenance concern with any 4in1 ESC is heat and vibration damage after repeated hard crashes, so inspecting solder joints and the capacitor leads after a bad impact is worth the two minutes it takes.

How it compares with current ESC options

Being a BLHeli_S board running the older V2 revision, this ESC sits a step behind iFlight's newer BLHeli_32 boards and behind rivals running BLHeli_32 firmware, which support bidirectional DSHOT natively without a firmware workaround, a feature that improves RPM filtering in Betaflight. Against similarly priced 45A 4in1 ESCs from smaller or unbranded manufacturers, the SucceX-E's advantage is coming from an established brand with a longer track record and wider community documentation for wiring and setup. For builders who specifically want bidirectional DSHOT out of the box, a BLHeli_32 ESC is the better starting point even at a similar price. For anyone who just wants a dependable, well documented 45A ESC and does not need the newer protocol, this remains a sound and budget friendly choice.

Verdict and who should look at newer boards

Our score of 8.4 out of 10 reflects a well built, dependable ESC that does its core job reliably on a budget, which is exactly what most freestyle and racing builds need from this part of the stack. It is worth buying for builders assembling a 2-6S quad who want proven BLHeli_S performance with DSHOT600 support and are comfortable soldering their own stack together. Anyone chasing the latest RPM filtering performance in Betaflight, or who specifically wants bidirectional DSHOT without flashing new firmware, should look at a BLHeli_32 ESC instead, even from within iFlight's own more recent lineup.

Frequently asked questions