This is the Castle Creations 10 7 4-Pole 1/14 Sensored Brushless Motor. Constructed with the high quality components Castle Creations products are known for, this powerful motor features precision sensored technology. With an incorporated sensor board this motor offers precise throttle control and buttery smooth starts, plus the incredible power and longer run times that these highly efficient motors produce. When paired with a sensored ESC such as the Mamba Micro X2 this is a great option for rock crawler applications that require high-precision low speed control and torque for climbing. Additionally racers that need precision and predictability along with drag racers can benefit from this technology as well.