EBC S4KR1227 Stage-4 Signature Brake Kit EBC Brakes S4KR1227 S4 Kits Redstuff and USR Rotor; Incl. Rotors and Pads; Rear; Rotor Dia. 11.1 in.; Authorized Dealer - 100% Satisfaction Guaranteed EBC Brakes S4KR1227 Warranty: Yes