Spektrum RC Firma 85A Brushless Smart ESC / 4000Kv Sensorless Motor Combo 43181 Pro-Line knows tires and understands

Pro-Line knows tires and understands that the strongest bond possible between the Tire and Wheel is a critical aspect of performance and tire longevity

Tough construction that survives bumps and jumps

Needless to say

Recognizes and remembers settings for up to 4 connected chargers

LEGO® building bricks meet stringent global safety standards

Spektrum RC Firma 85A Brushless Smart ESC / 4000Kv Sensorless Motor Combo 43181 Pro-Line knows tires and understandsProduct Features Smart all in one telemetry Fast, powerful 32 bit ARM M4 processor Waterproof Multiple options for easy programming: Button programming Smart ESC Programming Box SmartLink USB Updating and Programmer application Multi point protection: Over current protection Automatic LiPo low voltage cutoff Thermal protection Failsafe protection Developed and designed by Spektrum engineers, in partnership with the industry's leading ESC manufacturer