Spektrum RC Firma 5-Pole 540 Crawling Motor (16T)Spektrum RC Firma 5 Pole 540 Crawling Motor. This optional rebuildable brushed motor is a great upgrade intended for 1 10 scale crawlers. The timing can be adjusted from 0 20 allowing you to tune the motor to best suite your needs. Package includes one brushed motor. Features: 5Pole design maximizes smooth throttle control at low speeds and efficiency Fully Rebuildable for simple maintenance and increased motor lifespan Adjustable Timing for expert