Choose your Castle Link software.
Castle Link Classic does not support Cobra series ESCs
Castle Link 2 works on any programmable Castle product, including Cobra Series.
See our Castle Link compatibility guide for more information.

Click one of the Blue Circles below to download the Castle Link installer.

Thank you for your purchase of a Castle Creations ESC! All Castle ESCs may be connected to your PC using the Castle Link USB adapter. The Castle Link software will give you access to a whole new world of tuning options. You may use Castle Link to tune your throttle and brake curves, set your drag brake feel, and use the incredible Torque Limit to keep the front end of your car on the ground with all the power you have at your command. As new software becomes available, you can install it in your Castle ESC for new and updated features. All of this ensures your Castle ESC will be the best that it can be.

With the Castle Link USB Programming kit you can use your Windows™ PC to easily program your controller. Adjustable settings include:

• Throttle

• Braking curve

• Drag brake

• Auto LiPo cutoff

• Punch Control

• Reverse Type

• Motor Type

Additional Castle Link benefits include:

• Access to all firmware updates, including added features sets released from Castle Engineering, at no charge

• Intuitive Demo Mode capability

• Ability to save setup profiles for later use

Castle Link includes all code for all Castle Link compatible hobby products in one convenient download. Beta and standard releases, including most of the prior versions, are available to users in this bundle.

Note: Castle Link software requires a Castle Link USB Adapter - sold separately and a computer that is running Windows.
Castle Link Classic is compatible with Windows 7, Windows 8, Windows 10, and Windows 11.
Castle Link 2 is compatible with Windows 10 and Windows 11

Macintosh users may take advantage of software such as Parallels Desktop, VMware Fusion, or Apple's Boot Camp along with Windows to run the Castle Link software, provided the Macintosh has an Intel processor. Macintosh installation is not supported by Castle Creations.