Tesla Model S Plaid Facelift II Pre-Preg Carbon Fibre Rear Diffuser by Adro (2021+)

Tesla left the rear of the refreshed Model S deliberately understated. Adro's Carbon Fiber Rear Diffuser is the answer for owners who want to keep the car's clean lines intact while adding the visual weight and aerodynamic intent the factory design holds back on. Aggressive fins, deep channels, and a sculpted lower face turn an otherwise flat rear valance into something that finally matches the performance underneath.

The part itself is laid up in genuine prepreg carbon fiber — the same construction process used in motorsport bodywork — for a panel that's stiffer, lighter and more dimensionally stable than the wet-laid carbon you'll find on cheaper alternatives. The weave is straight, the resin is even, and the autoclave-cured surface holds a deep, glass-smooth gloss that complements Tesla's paint palette rather than fighting it.

Underneath the surface, this is a properly engineered piece. Adro mapped the Model S underbody using 3D scanning, then ran the diffuser geometry through CFD simulation to refine the fin angles and exit profile. The result is a part that smooths airflow off the underbody, cuts rear-end turbulence at speed, and adds a measurable contribution to high-speed stability — not just a cosmetic shell.

Why it earns its place

• True prepreg construction — autoclave-cured carbon for higher strength-to-weight, tighter tolerances, and a finish that holds up.
• Direct OEM fitment — designed around scanned reference data, so it bolts on with no cutting, trimming, or panel adjustment.
• CFD-developed geometry — fin spacing and exit angles optimised in simulation to manage underbody flow and trim drag.
• Aggressive but coherent — sharp enough to read on a show floor, restrained enough to look like Tesla could have built it.

What's in the box

• 1 x Adro Carbon Fibre (pre-preg, 2x2 weave) Rear Diffuser
• 3M Adhesive Tape
  
• Mounting Hardware

Compatible models

• Tesla Model S (2021+)