Brembo 1N3.9001A3 Gran Turismo Big Brake Kit High Performance Upgrade System

The Brembo 1N3.9001A3 Gran Turismo (GT) Big Brake Kit represents the pinnacle of high-performance braking technology for street and track applications. This comprehensive brake upgrade system utilizes larger calipers and oversized rotors to dramatically increase brake torque and thermal capacity, delivering superior stopping power and fade resistance under demanding conditions.

Two-Piece Rotor Configuration:

The GT system features Brembo's advanced two-piece floating hat and rotor assemblies that reduce unsprung and rotating weight while improving heat dissipation. This design enhances suspension response and provides more consistent braking performance during aggressive driving.

Complete Kit Includes:

• Brembo multi-piston calipers (2, 4, 6, or 8 piston depending on application) with sequentially sized pistons for balanced pad wear
• Two-piece drilled or slotted brake rotors up to 16 inches (405mm) diameter
• DOT/TÜV approved stainless steel braided brake lines for improved pedal feel
• High-performance brake pads engineered for GT applications
• Floating anti-rattle hardware for quiet operation
• Billet aluminum caliper mounting brackets
• Complete hardware for seamless installation

One-Piece Rotor Configuration:

Select applications feature one-piece rotor designs up to 14 inches (355mm) as a cost-effective performance solution. These systems include 2 or 4 piston calipers with drilled or slotted rotors, stainless steel brake lines, performance pads, and all mounting hardware.

Key Features:

• Caliper color options: red, black, or silver finish
• Fully compatible with ABS and traction control systems
• Most applications include TÜV certification for European compliance
• Engineered for precise fitment and optimal wheel clearance

Important: Wheel measurement is critical for proper fitment. Verify wheel clearance before installation to ensure compatibility with your specific wheel design.