Brembo 1S1.8005A1 GT Big Brake Kit 4-Piston 345mm Front Cross-Drilled Black

The Brembo GT Big Brake Kit delivers race-proven stopping power and distinctive style with its forged monobloc 4-piston calipers and 2-piece cross-drilled rotors. This complete front brake upgrade system features 345x28mm (13.6x1.1 inch) cross-drilled discs that provide improved heat dissipation and resistance to brake fade during aggressive driving.

Key Features:

• Forged monobloc 4-piston aluminum calipers finished in black with Brembo logo
• 345x28mm (13.6x1.1 inch) 2-piece cross-drilled floating rotors for optimal cooling
• Type III anodized aluminum hats reduce unsprung weight versus stock iron rotors
• High-performance Brembo brake pads included for immediate installation
• Stainless steel braided brake lines for improved pedal feel and responsiveness
• Complete bolt-on installation with all necessary hardware and brackets
• Engineered specifically for Honda Civic Si (2017+) fitment

Brembo GT systems are designed and tested to exceed OEM performance standards while maintaining proper brake bias and ABS functionality. The 2-piece rotor design allows for thermal expansion without warping, while the cross-drilled pattern evacuates gases and debris for consistent bite. Each caliper is machined from a single forging for maximum strength and rigidity, eliminating flex under heavy braking loads.