Brembo 1MD.9040AS GT-S Series Big Brake Kit Drilled Rotors - 6-Piston 2-Piece

The Brembo 1MD.9040AS GT-S Series Big Brake Kit is a complete, motorsport-derived braking upgrade engineered for performance street and track day use. Part of Brembo's acclaimed GT-S line, this kit bridges the gap between demanding road driving and serious circuit performance, delivering race-inspired technology in a fully street-compatible package.

At the heart of this big brake kit (BBK) are 6-piston cast monobloc radial-mounted calipers derived directly from Brembo's M-Series racing caliper family. The hard-anodized aluminum caliper bodies feature racing-style piston radiators, dual inner piston seals (inner pressure seal and outer wiper seal), and recessed dust seals for the best combination of long-lasting performance and thermal endurance. The Brembo logo is engraved in red, reflecting the kit's motorsport heritage.

The kit includes oversized 2-piece floating drilled rotors with an aluminum center bell, designed to reduce unsprung weight while maximizing thermal capacity. The floating disc design allows radial and axial expansion under heat, virtually eliminating warping. The cross-drilled braking surface continuously dissipates heat, purges brake dust and gases, and helps maintain a consistent friction coefficient even under repeated hard stops — dramatically reducing the risk of brake fade.

Key Features:

• 6-piston cast monobloc radial-mounted aluminum calipers — racing-derived M-Series design
• Oversized 2-piece floating cross-drilled brake rotors for maximum heat dissipation
• Hard-anodized caliper body for corrosion resistance and longevity at high temperatures
• Racing-style piston radiators with dual inner piston seals for superior thermal performance
• Floating disc hardware (bobbins) allows thermal expansion without warping
• High-performance brake pads included — optimized for both street and track use
• Metal-braided stainless steel brake lines included for improved pedal feel and fade resistance
• CNC-machined caliper adapter brackets and all necessary mounting hardware included
• Ships pre-assembled for straightforward installation
• Compatible with ABS and traction control systems

The Brembo GT-S Big Brake Kit delivers a significant and immediately noticeable improvement in stopping power, pedal feel, and brake modulation over OEM systems. Whether used on a high-performance street car or driven hard at track days, the 1MD.9040AS provides the confidence and consistency that only a world-class braking system can offer.