The Brembo rear GT Big Brake Kit features cast 4‑piston calipers and two-piece 345×28 mm slotted rotors in a Type 3 pattern with a silver finish to aid cooling and consistent pad engagement. It installs as a rear direct-replacement upgrade. This kit is specified for 2005 1ster S/Spyder applications (excl. PCCB) according to source data.
Brembo 05-1ster S/Spyder (Excl PCCB) Rr GT BBK 4Pis Cast 345x28 2pc Rtr Slot Type3-Silver