The McPappy Racing RC Brushless Chassis Dyno version 2.0 comes in 4 different sizes, 2WD and 4WD, chassis testing or motor to motor testing, 4 different load levels, built in flywheel, can simulate an entire race, and with Windows 8 or later, can even be controlled with your voice. This can  accommodate anything from a small slot car up to 1/5th scales. Custom sizes are also available.

4WD drive versions now come with the upgraded stainless steel articulating arms.

The black ABS panel option allows you to mount your computer controlled devices like the Denkovi and Pololu Maestro. The ABS panel can be seen in this picture under the Maestro, Denkovi, and Eagle Tree.

All dynos come fully assembled like you see in the above pictures.

Full details to the McPappy Racing Brushless Chassis Dyno can be seen here.