For BMW M3 / M4 AD Style Rear Lip Diffuser with LED LightProduct Description Enhance the aggressive rear styling of your BMW M3 or M4 with this AD Style Rear Lip Diffuser with Integrated LED Light, finished in glossy black. Designed for performance enthusiasts, this rear lip adds a bold motorsport inspired look while maintaining a clean OEM+ appearance. The AD style design visually lowers the rear bumper and creates a wider, more planted stance. The integrated LED light adds a modern performance accent,