The EBC Racing 12-20 Audi A3 (8V) 1.8T Yellow Apollo-4 Calipers 330mm Rotors Front Big Brake Kit is a performance brake upgrade designed to provide increased stopping power and improved brake feel for Audi A3 (8V) 1.8T vehicles. The kit includes four-piston yellow Apollo-4 calipers, 330mm rotors, and all necessary hardware for installation. This kit is designed to provide superior braking performance and reliability in all conditions, while also providing an aesthetically pleasing look.