Brembo 1Q1.9637A2 GT Series Front Big Brake Kit with 2-Piece Drilled Rotors

The Brembo 1Q1.9637A2 is a GT Series front Big Brake Kit (BBK) engineered for drivers who demand exceptional stopping performance on both the street and the track. Part of Brembo's celebrated GT upgrade line, this kit pairs oversized 2-piece drilled rotors with radial-mounted, multi-piston aluminum fixed calipers to deliver a significant upgrade over factory braking systems.

Key Features:

• Multi-Piston Aluminum Fixed Calipers — Radial-mounted with opposed pistons for even brake force distribution, greater caliper stiffness, and uniform pad wear
• 2-Piece Drilled Rotors — Oversized composite disc design with cross-drilled pattern to dissipate heat, eliminate brake gases, and reduce the risk of thermal shock cracking
• Exclusive Ventilation System — Optimized internal venting reduces the risk of thermal cracking by up to 40% compared to standard rotors
• High-Performance Brake Pads Included — Brembo Sport pads with application-specific friction materials for confident modulation in all conditions
• TÜV/DOT Homologated Stainless Steel Braided Brake Lines — Improved pedal feel and consistent hydraulic response over standard rubber hoses
• Complete Hardware Kit — Includes caliper adapter brackets, CNC-machined mounting hardware, and all necessary fasteners for a straightforward installation

The Brembo GT system's fixed caliper design delivers more precise piston actuation versus sliding calipers, resulting in a braking response that is noticeably more immediate under normal driving and extraordinarily consistent under the repeated thermal loads of track use. The 2-piece rotor construction reduces unsprung and rotating mass compared to a solid one-piece disc, further enhancing dynamic performance. This kit is a complete front brake upgrade solution — everything needed for installation is included in the box.