This item fits inside the CMAX chassis rails ahead of the rear cross member.
This item only works with the Leaf Spring rear suspension setup on the CMAX
The Radio Box was designed to fit most popular 3 channel small RX and one small ESC. The radio box has a switch attachment slide on it as well for clipping in the ESC switch, and operating from below the box.
This box fits level with the top of the CMAX chassis rail.
You will have to clean out the 2 mounting holes in the long side with a 3/32 or 2.5mm drill before installation. We recommend (2) M3x6 screws for attachment on the long side, and one M3x8 for the crossmember single hole side.