Rhino Crawler 80A has one USB Link for free This ESC preloaded AM32 custom firmware. It’s optimized for crawler and makes your car run super smooth and quiet, but it is also suitable for a variety of 1/8 scale or smaller cars. A built-in adjustable four voltage BEC with a maximum current 10A to apply the high torque servo. In addition, the e-Switch that comes with it avoids failures caused by harsh environments. All wires are pre-soldered. Feature AM32 custom firmware Sinewave startup allows the motor smoothly at ultra-low speeds Variable drive frequency Low voltage, throttle loss and stalled rotor protection High-performance 32-bit MCU E-switch with long life and waterproof Specs Product Num. A3100 Battery: 28S Lipo Current: 80A cont. BEC: max 10A, output 5.28.2V adjustable by DIP. Rhino Crawler 80A has one USB Link for free. This ESC preloaded AM32 custom firmware. Sinewave startup allows the motor smoothly at ultra-low speeds Variable drive frequency. Low voltage, throttle loss and stalled rotor protection. E-switch with long life and waterproof. BEC: max 10A, output 5.28.2V adjustable by DIP switch. Waterproof: ESC not supported / e-switch supported. FAN: not include, solder pads for power is reserved. Wires: battery 14AWGx150mm, output 14AWGx150mm, signal 250mm and e-switch 120mm. Dimensions: 60x29x15mm (without wires). About RhinoCrawler RM-S20 Brushless Motor. RhinoCrawler RM-S20 (540) is an extremely torque dense and lightweight choice with exceptional startup! It has more mounting positions, beefier wire retainer, and thicker back iron. RM-S20 is very difficult to produce, and it is currently the smallest size of the 2820 stator, the outer size of the RM-S20 stator 2820 is only 35x32mm! In addition, it adopts a specially customized dual tile strong magnetic design, which makes the motor lightweight and has stronger explosive power on the basis of small size! Competitive RC Rock Crawling. 16ga silicon motor leads. Hollow Shaft for lightweight. KV: 1450KV / 1800KV / 2220KV. 14 pole 12 slot stator. 8.4V -16.8V (2-4S) LiPo. 1/8 D (3.17mm) shaft output. 25mm Mounting holes for M3 screws. 120g with wires, without connector. 35mm diameter x 32mm long.