Brembo 1N1.9091A1 GT Series Big Brake Kit 6-Piston Monobloc Black Caliper Drilled 2-Piece Rotor

The Brembo 1N1.9091A1 is a Gran Turismo (GT) Series Big Brake Kit featuring a 6-piston billet monobloc caliper in a black powder-coat finish, paired with an oversized 2-piece cross-drilled rotor. Engineered by the world's foremost braking authority, this complete kit delivers a substantial upgrade in stopping power, pedal feel, and thermal management over stock braking systems.

Caliper Features:

• 6-piston monobloc construction machined from a single billet of cast aluminum for maximum rigidity and minimal flex under load
• Differential piston bore sizing eliminates pad taper wear and promotes even friction surface contact
• Twin-seal design protects against debris intrusion and brake fluid contamination
• Black powder-coat finish for corrosion resistance and an aggressive appearance
• Compatible with factory ABS and traction control systems

Rotor Features:

• Oversized 2-piece floating disc construction with an aluminum alloy hat reduces unsprung mass for improved handling response
• Cross-drilled rotor surface promotes lower operating temperatures, improved wet-weather braking, and continuous pad surface renewal
• Exclusive venting system improves cooling capacity and increases resistance to thermal shock cracking by over 40%
• Floating mount design allows for controlled radial and axial movement, preventing thermal distortion

Kit Includes:

• 6-piston monobloc aluminum calipers (black finish)
• Oversized 2-piece cross-drilled floating rotors
• High-performance brake pads
• Homologated stainless steel braided brake lines
• All necessary mounting hardware and anti-noise shims

Backed by Brembo's 2-year warranty against manufacturing defects, the GT Series kit is engineered for both spirited street driving and occasional track sessions. Minimum 17-inch wheels are typically required to clear the larger rotor diameter — consult the Brembo wheel clearance guide before installation.