Rear lower bumper diffuser valance with "RS" side aero fins. The center portion is identical to the standard GT4, but side fins are claimed to have aerodynamic benefits. We like that this piece adds a slightly larger presence to the rear bumper, and the fins could keep some road debris away from the rear bumper paint.
Fits 2021-2023 Cayman GT4 & Boxster Spyder models. Must reuse bumper hardware and other parts from your existing diffuser panel.