The Brembo GT big brake kit for 2006 330xi and 2006–2012 325xi/328xi front applications pairs four‑piston cast calipers with two‑piece 355×32 mm slotted rotors (Type 1) in silver. This front upgrade is supplied as the caliper and 2pc rotor combination with the exact rotor dimensions and slot pattern specified for those BMW xi models and years.
Brembo 06 330xi/06-12 325xi/328xi Fr GT BBK 4 Pist Cast 2pc 355x32 2pc Rotor Slotted Type1-Silver