Brembo GT High-Performance Braking System 1M3.9038A2. This Gran Turismo (GT) Big Brake Kit is engineered for superior stopping power and thermal capacity. The kit features 6-piston monoblock aluminum calipers and large 2-piece floating discs to reduce unsprung weight and improve heat dissipation. Included Components: 2x Brembo 6-Piston Cast Monoblock Calipers (Red Finish, Left/Right), 2x Type 3 Slotted 2-Piece Rotors (380x32mm, 103.9009A/104.9009A), 2x Aluminum Hub Adapters/Bells, 1x High-Performance Brake Pad Set (Front), 2x Stainless Steel Braided Brake Lines, 1x Mounting Hardware Kit (Brackets and Fasteners).