This is the Tekno 1/8th scale wing shim. The addition of the VSR 10mm wing shim elevates the rear wing of the NB48.4 orEB48.8. Raising the rear wing creates more down-force and stability at high speeds and on large jumps, and has worked well on large high-speed and bumpy tracks. Raising the wing allows it to create more consistent downforce, thus making a more consistent car throughout the corner. The 10mm 3D printed shim comes with 2 metric screws to replace the stock ones.

 
This shim is also offered in a 7mm variant which is a good tuning option between not running any shim and this 10mm shim.