Brembo GP2-SS HPK Rear Caliper Product Details: GP2-SS (HPK) rear caliper carved from two solid aluminium billet blocks then mechanically fixed together, allowing maximum rigidity and lightness that are reflected in the excellent performance of the caliper. Developed as an upgrade for OEM Brembo rear calipers. Caliper Technical Specs: Piston size - 34mm Piston quantity - 2 Mounting Centre's - 84mm Surface width - 35mm Offset - 16mm Pads included - Yes Caliper material - Aluminium Protection - Hard anodised Piston material - Aluminium Weight without pads - 581gr If you are unsure about fitment or have any questions please get in touch and a member of our team will be happy to help Brembo is the world's biggest name in brakes. Their technology has .