Thats a beast of a servo. I have one also. You'll have to buy the traxxas adapter to hold a standard size servo though, just be aware. Id also use an external BEC to supply the servo with the full 8.4V
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As long as the motor mounting holes are the correct spacing for the mount then it will work. For example, If you have a motor mount with 35mm mounting holes then as long as the motor also has 35mm mounting holes then it will work. Mounts arent brand dependent. As long as the...