This was recently announced from Addiction RC Design from Japan. A new rear diffuser for any RC Drift body, this product fits directly onto the body. This method is different from most other rear diffusers which use the R31 style attached to the chassis. The product comes in black and can be painted if desired. Addiction RC products tend to sell out quickly, most retailers are already sold out. This diffuser will help you to replicate the look of your favorite D1 or Formula Drift car. This product has a MSRP of ¥850, hopefully with demand being so strong the subsequent production runs can be increased.
Want to make your RC Drifter unique from others? Now you can with Addiction Design RC products. Now you can add a whole new dimension of scale to your RC Drifting body.
A diffuser, in an automotive context, is a shaped section of the car underbody which improves the car’s aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere. It works by providing a space for the underbody airflow to decelerate and expand (in area, density remains constant at the speeds that cars travel) so that it does not cause excessive flow separation and drag, by providing a degree of “wake infill”. The diffuser itself accelerates the flow in front of it, which helps generate downforce.
Source: Addiction RC Design Japan