Brembo 4KC.6021AX Gran Turismo Big Brake Kit 4-Piston Cast Monobloc Caliper

The Brembo 4KC.6021AX Gran Turismo Big Brake Kit is a high-performance braking upgrade engineered with motorsport-derived technology for demanding street and track applications. Built around Brembo's proven Gran Turismo platform, this kit delivers a dramatic improvement in stopping power, heat management, and pedal feel over a vehicle's factory braking system.

At the core of this kit is a 4-piston cast monobloc aluminum caliper — machined from a single aluminum casting for exceptional rigidity and minimal flex under hard braking loads. The monobloc construction virtually eliminates caliper deformation, translating to consistent, confidence-inspiring brake response lap after lap.

Key Features:

• 4-Piston Cast Monobloc Aluminum Calipers — rigid, lightweight construction derived from Brembo's racing program
• Oversized Vented Brake Rotors — larger diameter discs improve thermal capacity and reduce brake fade
• High-Performance Brake Pads — included as standard for immediate performance gains out of the box
• Stainless Steel Braided Brake Lines — DOT/TÜV approved for firm, consistent pedal feel
• CNC Billet Caliper Mounting Brackets — precision engineered for a direct bolt-on fit to OEM suspension points
• Full ABS and Traction Control Compatibility — seamlessly integrates with factory electronic safety systems
• All Necessary Hardware Included — complete kit for a straightforward installation
• Available Caliper Colors — typically offered in Red, Black, Silver, and Yellow to complement your vehicle's appearance

Brembo Gran Turismo Big Brake Kits are designed to bolt directly onto the vehicle's original suspension geometry without requiring hub modifications, and the vehicle can be returned to stock brakes in the future if desired. Brembo backs this kit with a two-year warranty against manufacturing defects.

As the benchmark supplier to Formula 1, MotoGP, and the world's leading production car brands, Brembo brings over 50 years of braking expertise to every Gran Turismo kit — delivering race-proven technology that excels in both everyday traffic and high-performance track environments.