Brembo 4KC.9008AX GT Big Brake Kit 4-Piston Caliper Upgrade

The Brembo 4KC.9008AX Gran Turismo (GT) Big Brake Kit is a complete, bolt-on brake upgrade engineered for drivers who demand superior stopping power, fade resistance, and precise pedal feel. Drawing on Brembo's decades of motorsport experience supplying Formula 1, MotoGP, and the world's leading production car manufacturers, this kit delivers a significant performance leap over stock braking systems.

Key Features:

• 4-Piston Fixed Aluminum Calipers — Lightweight, rigid fixed-mount calipers with sequential piston bores for even pad contact and consistent braking force across the full pad surface
• 2-Piece Floating Rotors — Vented, cross-drilled two-piece disc assemblies that float in both radial and axial directions, improving heat management and resistance to thermal distortion
• High-Performance Brake Pads — Brembo-matched friction pads included, optimized for both street and track driving conditions
• Stainless Steel Braided Brake Lines — Included lines stabilize brake pressure for enhanced pedal modulation and feedback
• CNC Billet Caliper Adapters — Precision-machined mounting hardware ensures proper fitment and caliper alignment
• Complete Hardware Kit — All necessary fasteners, retaining hardware, and installation components included for a straightforward installation

Brembo GT Big Brake Kits are designed and validated for both demanding track-day use and everyday street driving. The monoblock-style caliper design maximizes rigidity and minimizes flex under extreme braking loads, while the cross-drilled rotor finish helps dissipate heat and evacuate brake dust and gases from the friction surface. This kit is backed by Brembo's two-year warranty against manufacturing defects.

Part number 4KC.9008AX is an authentic Brembo GT Series Big Brake Kit. Always verify wheel clearance requirements prior to installation, as big brake kits typically require a minimum wheel diameter to clear the larger caliper and rotor assembly.