Brembo 4K3.9003A PISTA 6-Piston Rear Brake Kit 380x32mm TY3 2-Piece Discs

The Brembo 4K3.9003A PISTA brake system represents professional-grade racing technology designed for track enthusiasts and competitive motorsports applications. This rear axle kit features 6-piston calipers paired with high-performance 380x32mm 2-piece floating brake discs featuring the proven TY3 slot pattern.

Key Features:

• 380mm diameter x 32mm thickness ventilated 2-piece brake discs
• TY3 (Type 3) slot pattern for superior pad bite and consistent performance
• 6-piston fixed monobloc caliper design for maximum clamping force
• 53a bell configuration with hard anodized aluminum hat
• 2-piece floating disc construction reduces unsprung weight
• 72-vane ventilation design for enhanced heat dissipation
• Advanced high-carbon alloy disc rings with corrosion-resistant finish
• D-type bobbin hardware with anti-rattle springs included

The TY3 slot pattern is extensively used in professional GT and endurance racing, offering exceptional initial bite with excellent pad release characteristics. The 2-piece floating design combines a cast-iron friction ring with a lightweight aluminum bell, significantly reducing rotating mass while dramatically improving thermal capacity and heat management compared to OEM rotors. This system is engineered for serious track use where consistent, fade-free braking performance is essential.