Description ADRO A14A50-1301 Rear Diffuser for BMW M3 (G80) / 3 (G20) 2021- The ADRO AT-R3 curved Wing is made from prepreg carbon fiber and delivers more than 277.7 pounds of downforce at 110 mph for maximum weight savings. Its construction is 45% lighter than aluminum and its vertical design maximizes aerodynamic efficiency and minimizes air resistance. Technical characteristics - Material: Dry Carbon Fiber - Version: v1 What’s in the box - 1 Main Plate - 1 Dual Element Main Plate - 2 Curved End Plates - 2 Aluminum Brackets - 2 Carbon Fiber reinforcement trunk brackets - Hardware - 1 Installation manual