Spektrum SPMXSEF2 Firma 150A ESC Cooling Fan

This is the official Spektrum replacement cooling fan for the Firma Smart 150A ESC. The fan is the hardest-working wear item on a high-current speed control — it runs every session, ingests dust and debris, and is usually the first component to fail on an otherwise healthy ESC. When the fan on a Firma 150A gets noisy, slows down, or stops spinning, this is the direct factory replacement that restores full cooling capacity.

Proper airflow matters on a 150A-class ESC. Without a working fan, the ESC relies on its heat sink alone and will reach thermal protection cutoff much sooner under load, cutting runs short and stressing the electronics. Swapping in a fresh fan is a quick, inexpensive fix that keeps the ESC running at full output through long, high-load runs.

This fan is compatible with the Spektrum Firma Smart 150A ESC (SPMXSE1150), the speed control found in many large-scale brushless RTR vehicles. Installation is a straightforward direct swap onto the ESC's heat sink.

The package includes one replacement cooling fan.