This Castle Creations Copperhead 10 4S Brushless Sensored ESC with 1406-1900kv Motor Combo eliminates the guesswork in finding the right brushless power upgrade for your RC car. This combo is suitable for rock crawlers on 2S - 4S and low-speed setups on buggies, stadium trucks or touring cars.

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https://www.modelflight.com.au/castle-creations-copperhead-10-4s-brushless-sensored-esc-with-1406-1900kv-motor.html