RW Carbon BMW E90 M3 Hamann Style Carbon Fiber DiffuserThis Hamann Style Carbon Fiber Rear Diffuser is directly modeled after the real Hamann diffuser for the E90 M3. These are built using real 1x1 plain weave carbon fiber and then finished off with a high quality clear coat that not only gives it a beautiful shine, but also protects it from the sun and road debris. Each diffuser that ships out is quality checked to ensure you are receiving a defect free product. Call up on of our carbon fiber specialists