The Brembo two-piece front rotor for 2014–2019 991 GT3 and 991 GT3 RS (excluding PCCB) is a 380×34 mm, two-piece disc with a Type-5 slotted face. Supplied as a front rotor set, the description notes the two-piece construction and slotting type intended for direct replacement on the listed 991-series GT3 models without PCCB equipment.
Brembo 14-19 991 GT3/991 GT3RS (Excl. PCCB) Front 2-Piece Discs 380x34 2pc Rotor Slotted Type-5