Spektrum SPMXSM2000 Firma 3660 3200Kv Brushless Motor

The Spektrum Firma 3660 is a 3200Kv four-pole sensorless brushless motor built for 1/10-scale surface vehicles. It serves as both a direct replacement for the stock motor in several ARRMA 3S BLX models and a straightforward power upgrade for builds running two to three LiPo cells.

The four-pole rotor design delivers strong low-end torque along with high top-end speed, which suits bashing, off-road running, and general high-power use where a two-pole motor would run out of pulling power. The 3660 can size with a 5mm output shaft is a common fit for 1/10-scale motor mounts, and the motor terminates in 4mm bullet connectors for a plug-and-play connection to most compatible speed controls. Rated output is 1150W on 3S.

Key specifications: 3200Kv, four poles, sensorless, 2S-3S voltage range, 60mm (2.36 in) length, 36mm (1.41 in) outer diameter, 5mm (0.197 in) shaft diameter, 45mm wire length, 306g weight, 4mm bullet connector type.

ARRMA compatibility includes the Big Rock 3S BLX, Granite 3S BLX, Typhon 3S BLX, Vendetta 3S BLX, and Vorteks 3S BLX. It is a good option across most ARRMA 3S BLX platforms as a replacement for a worn or failed motor, or as an upgrade path for builds moving to higher power. The package includes one Firma 3660 3200Kv four-pole brushless motor.