Traxxas Traxxas XO‑1 Castle Mamba Monster 2 ESC iD & Heat Sensor is a high‑performance electronic speed controller designed to replace or upgrade the stock ESC in high‑end Traxxas vehicles like the XO‑1, offering robust power handling and smooth throttle response for demanding driving and racing environments. This waterproof Monster 2 ESC from Castle Creations provides precise speed control and built‑in protection features, and when paired with the included iD and heat sensor it allows you to monitor controller temperature and performance to help prevent overheating and ensure reliable operation. Because it’s engineered for high‑current brushless systems, it delivers improved thermal stability and durability, making it ideal for 4WD monster trucks, truggies, and buggies running up to 6‑cell LiPo battery power. Compatible with Traxxas XO‑1 and other platforms that accept Castle Monster 2 ESCs or similar ESC mounts, and works with a wide range of 1/8 and large 1/10 scale RC vehicles when properly installed.