Brembo 1J3.9004A3 Gran Turismo Big Brake Kit with Multi-Piston Calipers

The Brembo 1J3.9004A3 Gran Turismo (GT) Big Brake Kit delivers race-proven stopping power for high performance street and track applications. This complete brake upgrade system features Brembo's advanced caliper and rotor technology, engineered to provide superior thermal management and increased brake torque compared to factory brake systems.

Two-Piece Rotor System Features:

• Multi-piston aluminum calipers (2, 4, 6, or 8-piston depending on application) with sequentially sized pistons for balanced pad wear
• Two-piece floating hat and rotor assemblies reduce unsprung weight and improve heat dissipation
• Drilled or slotted rotors available up to 16 inches (405mm) diameter
• DOT/TÜV approved stainless steel braided brake lines
• High-performance brake pads engineered for aggressive stopping
• Floating anti-rattle hardware for quiet operation
• CNC-machined billet aluminum caliper mounting brackets

One-Piece Rotor System Features:

• 2 or 4-piston aluminum calipers with sequentially sized pistons
• Drilled or slotted one-piece rotors up to 14 inches (355mm) diameter
• DOT/TÜV approved stainless steel braided brake lines
• High-performance brake pads included
• CNC-machined billet aluminum mounting brackets

Complete System Benefits:

• Available caliper colors: Red, Black, or Silver
• TÜV certification on most GT applications
• Fully compatible with ABS and traction control systems
• Includes all necessary hardware for bolt-on installation

Important: Wheel measurement and brake clearance verification is required before installation. Proper fitment depends on wheel spoke design, offset, and inner barrel dimensions.