Brembo 1ND.9004AS GT-S Big Brake Kit 4-Piston Hard Anodized Calipers 380x28mm 2-Piece Rotors

The Brembo 1ND.9004AS is a complete GT-S Series Big Brake Kit featuring Brembo's hard anodized fixed-mount caliper technology paired with large-diameter two-piece rotor assemblies. Part of the renowned 9004AS GT-S lineup, this kit delivers a substantial upgrade over factory braking systems, increasing thermal capacity, caliper rigidity, and overall stopping consistency for both street performance and track-day use.

Key Features:

• 4-Piston Cast Monobloc Calipers — Fixed radial-mount design with hard anodized black finish for superior surface durability and heat resistance
• 380mm x 28mm 2-Piece Rotor Assembly — High-carbon alloy friction ring mounted to a lightweight billet aluminum hat, reducing unsprung rotating mass
• Directionally Vented Rotor Design — Curved vane configuration maximizes airflow through the rotor for enhanced cooling and fade resistance
• Corrosion-Resistant Rotor Plating — Protects rotor surface between uses and extends service life
• Available Rotor Configurations — Cross Drilled (TY1), Type 1 Slotted (TY3), or other configurations depending on selected variant
• Brembo FM1000 High-Performance Brake Pads — Included and pre-loaded in the calipers, suited for street and performance driving
• Goodridge Stainless Steel Braided Brake Lines — DOT/TUV-approved lines for improved pedal feel and consistent fluid pressure
• CNC Billet Radial Mounting Hardware — Aircraft-quality brackets and all necessary hardware included
• Ships Pre-Assembled — Ready for installation straight out of the box

The GT-S line sits above Brembo's standard GT system, incorporating hard anodized caliper bodies for greater surface hardness and long-term heat resistance. The two-piece floating rotor design allows for thermal expansion without warping, maintaining consistent rotor geometry under repeated hard stops. The result is a braking system engineered to keep pace with high-performance builds that have already outgrown their factory rear brake capacity.

Important: Wheel clearance must be verified prior to installation. Refer to the Brembo Application Guide and caliper clearance diagrams to confirm fitment with your specific wheel setup. Some installations may require modification or removal of the OEM dust shield.