Brembo 1MD.8039A5 Gran Turismo Big Brake Kit Cross-Drilled - 355mm 6-Piston Front

The Brembo 1MD.8039A5 Gran Turismo (GT) Big Brake Kit is a complete front braking upgrade engineered for drivers who demand maximum stopping performance on the street and at the track. Part of Brembo's renowned Gran Turismo series, this kit replaces the entire front corner brake assembly with oversized components developed from decades of motorsport experience.

Key Features:

• 355mm x 32mm Two-Piece Floating Rotors — Cross-drilled finish with an exclusive venting system that improves cooling capacity and increases resistance to thermal shock cracking by over 40%
• Monoblock 6-Piston Calipers — Machined from a single billet of cast aluminum for outstanding rigidity and minimal flex under hard braking; radial-mounted fixed design increases overall braking torque
• Two-Piece Floating Disc Assembly — Reduces unsprung mass, improving suspension dynamics, acceleration, and handling response
• High-Performance Brake Pads — Included as standard, formulated specifically for use with Brembo GT calipers and rotors
• Stainless Steel Braided Brake Lines — Provide firm, consistent pedal feel and resist expansion under high brake line pressures
• Complete Hardware Kit — Includes caliper mounting brackets, CNC-machined billet adapters, and all necessary fasteners for a straightforward installation

What's Included:

• (2) Monoblock 6-piston aluminum calipers
• (2) 355mm cross-drilled two-piece floating rotors
• Brembo high-performance brake pads
• Caliper mounting brackets and adapters
• Stainless steel braided brake lines
• All installation hardware

Important Notes:

• Due to the oversized caliper and rotor dimensions, aftermarket wheels are required — stock wheels will not clear this kit
• Backed by Brembo's 2-year warranty against manufacturing defects
• Installation time is approximately 1–1.5 hours per axle

The Brembo GT Big Brake Kit delivers a significant upgrade in braking power, fade resistance, and pedal feel over stock systems — purpose-built for performance street driving, track days, and show builds alike.