Brembo 4KC.8038AX GT-R Big Brake Kit 4-Piston Race Caliper System

The Brembo 4KC.8038AX is a GT-R series Big Brake Kit engineered for drivers who demand race-derived stopping performance on the street or track. Built on Brembo's motorsport heritage as the benchmark supplier to Formula 1 and MotoGP, this kit delivers a significant braking upgrade over stock systems through oversized rotors, high-rigidity calipers, and a complete hardware package.

Key Features:

• 4-Piston Monobloc Caliper: Cast from a single piece of aluminum for exceptional stiffness and minimal flex under heavy braking loads
• Oversized Vented Brake Disc: Large-diameter rotor increases thermal mass and surface area for superior heat dissipation and fade resistance
• Race-Grade Brake Pads: High-performance compound pads included, formulated for strong initial bite and stable friction across a wide temperature range
• Stainless Steel Braided Brake Lines: Reduce line expansion for a firm, consistent pedal feel
• CNC-Machined Caliper Adapters: Precision-engineered brackets ensure correct caliper alignment and a direct bolt-on installation
• Complete Hardware Kit: All necessary mounting hardware, anti-rattle clips, and fasteners included
• ABS and Traction Control Compatible: Designed to work seamlessly with the vehicle's existing ABS and electronic stability systems
• Caliper Color Options: Available in Brembo's signature red, yellow, black, or silver to complement your build

The Brembo GT-R Big Brake Kit is built around the same engineering principles developed on the world's most demanding racing circuits. The monobloc caliper design eliminates the potential for caliper body flex, ensuring even pad-to-rotor contact and consistent brake modulation. The oversized rotor increases braking torque while the vented design moves heat away from the pad and caliper to prevent fade during repeated hard stops.

Installation is straightforward using the included CNC billet adapter brackets, allowing the kit to bolt directly to the vehicle's stock suspension knuckle without permanent modifications. The system is fully reversible, and the stock braking components can be reinstalled at any time. Aftermarket wheels with adequate caliper clearance are typically required — verify wheel fitment before installation.