AP Racing by Essex 2-piece Competition J Hook Disc Pair (Front 372x34mm)- Audi RS3 (8V)AP Racing by Essex 2 piece Competition J Hook disc pair for the 2017+ Audi RS3 (8V): AP Racing Radi CAL calipers and brackets can be added later to transform your discs into one of our complete Essex Designed AP Racing Radi CAL Competition Brake Kits Saves approximately 18 lbs. of unsprung weight vs. OEM iron! Only 2mm larger diameter vs. stock allows for 18" track wheels and maintains proper brake bias Huge increase in airflow, cooling capacity, and