Brushless motors and ESCs for RC, UAVs, robotics, and more—engineered in the USA for high power, precision control, and lasting reliability.

Mar 19, 2025 · Introducing the Castle Cobra 5 and Cobra 5 ACE, a high-performance ESC duo engineered to overpower 1/7th and 1/5th scale RC machines with cutting-edge hardware and …

Engineered for serious speed runners and drag racers, Ghost RC brings American ingenuity and no-compromise performance to the RC world. Every ESC and motor is crafted in collaboration with …

Download Castle Link software to update firmware, adjust ESC settings, and fine-tune performance.

Our Marine Product lineup is purpose-built for high-performance RC boats that demand brutal torque, thermal control, and bulletproof reliability. From the proven Hydra X 8S to the next-generation Hydra …

Oct 30, 2023 · In this blog post, we'll delve into the common causes of ESC failures and discuss how to prevent them.

May 8, 2025 · We are going to dive into how to fine-tune your gearing for speed (mostly) without overheating your ESC or motor—and how a few Castle “tools” make it easy to get it right!

Castle addressed three main concepts while designing a new ESC for the modern day RC enthusiast; VERSATILITY, RELIABILITY, and PERFORMANCE. These are the pillars of the Mamba X design …

You will be able to record real-time data such as motor RPM, battery current and voltage, ESC and motor temperature, throttle input, and more. Download and analyze the collected data via Castle Link …

Oct 5, 2022 · Can I run a sensored motor on a non-sensored ESC (IE Sidewinder 4 or Mamba Monster 2)? Absolutely! But you will not be able to utilize the sensored capabilities of the motor. The ESC will …