Brembo 1J1.9029A1 GT Series Big Brake Kit Drilled Rotors - 6-Piston 380mm 2-Piece Black

The Brembo 1J1.9029A1 GT Series Big Brake Kit is a complete front brake upgrade engineered for drivers who demand superior stopping power on both the street and the track. Part of Brembo's renowned Gran Turismo (GT) performance brake lineup, this kit delivers significantly increased thermal capacity, fade resistance, and braking confidence over factory brake systems.

At the heart of this system is a 6-piston aluminum-alloy caliper finished in a durable black powder coat. The monobloc caliper design uses differential piston bores to eliminate pad taper wear and incorporates a twin-seal construction to keep brake fluid free from contamination and debris.

The kit includes 380mm two-piece cross-drilled rotors that are constructed from cast iron alloy and zinc-coated for corrosion protection. The two-piece floating design allows for controlled radial and axial movement, preventing thermal distortion under sustained hard braking. Cross-drilled surfaces promote lower operating temperatures and help evacuate water and debris for consistent rotor-to-pad contact.

Key Features:

• 6-piston aluminum-alloy caliper with black powder-coat finish
• 380mm two-piece cross-drilled performance rotors
• Differential piston bores to prevent uneven pad wear
• Twin-seal caliper design to protect brake fluid from contamination
• Zinc-coated cast iron rotors for corrosion resistance
• Includes Ferodo FM1000 high-performance brake pads
• Stainless steel braided brake lines included
• Aircraft-grade pre-torqued mounting hardware
• Compatible with factory ABS and traction control systems
• Backed by Brembo's 2-year warranty

This kit ships as a complete front brake assembly with all necessary hardware for installation. Note that 17-inch or larger wheels are typically required to clear the oversized rotor diameter. Wheel backspacing and clearance should be verified prior to installation using the provided clearance guide.