Brembo E46 M3 Race Big Brake Kit - 355x35mm 2-Piece FrontProduct Description: (F) 4 Piston Billet 2 Piece Calipers 355x35mm x53a (14") 2 Piece Discs Complete Front Axle Set Pre Assembled All Necessary Hardware Included INTENDED USE Street Track Race ___ ___ ___ ___ ___ CALIPER Body: Billet 2 Piece Piston Configuration: 4 Piston Piston Design And Insert Type: Inner Pressure Seal Stainless Steel Insert DISC Type: Type 3 Slotted Semi Float Material Finish: Advanced High Carbon Alloy Corrosion Resistant Plating