Brembo 4K3.8042AZ Gran Turismo 4-Piston Big Brake Kit

The Brembo 4K3.8042AZ Gran Turismo Big Brake Kit is a complete, bolt-on brake upgrade engineered for drivers who demand maximum stopping power, fade resistance, and precision feel. Designed and manufactured by Brembo — the global leader in high-performance braking systems — this kit delivers race-proven technology in a street-legal package.

At the heart of this kit is a 4-piston aluminum caliper finished in an anodized coating for corrosion resistance and lasting good looks. The kit pairs the caliper with a slotted and cross-drilled (or slotted, depending on rotor variant) Brembo GT rotor, engineered for improved heat dissipation and consistent bite under repeated hard stops.

Key Features:

• Brembo 4-piston monobloc aluminum caliper with anodized finish
• High-carbon, vented Brembo GT brake rotor for superior thermal management
• Complete bolt-on kit — includes caliper, rotor, mounting bracket, and hardware
• Slotted rotor design helps evacuate gas, dust, and debris for consistent pedal feel
• Significantly increased rotor diameter over OEM for improved leverage and stopping force
• Designed to meet or exceed OEM safety and performance standards
• Street legal and compatible with standard DOT-approved brake fluid
• Anodized caliper finish resists corrosion and heat discoloration

Brembo Gran Turismo Big Brake Kits are engineered as direct-fit upgrades, requiring no cutting or modification to the vehicle's suspension geometry. The kit is ideal for performance street driving, track days, and towing applications where upgraded braking confidence is essential.