Brembo 4K3.9021A PISTA 4 TY3 2-Piece Rear Brake Rotors 380mm

The Brembo 4K3.9021A PISTA 4 TY3 is a high-performance 2-piece rear brake disc designed for serious track and racing applications. This premium rotor features a 380mm (approximately 15-inch) diameter with a 28mm thickness and 54mm center bell height, providing exceptional thermal capacity and fade resistance under extreme braking conditions.

Key Features:

• Two-piece floating rotor design reduces unsprung weight and allows independent thermal expansion of rotor and hat
• 380mm x 28mm rotor dimensions deliver massive heat dissipation and braking power
• 54mm aluminum center bell (hat assembly) precisely engineered for specific vehicle mounting
• PISTA series construction optimized for track day and racing use
• TY3 specification indicates specific rotor vane design and material composition
• Compatible with Brembo PISTA 4-piston rear calipers
• Directional vane pattern maximizes cooling airflow

Brembo's PISTA line represents their dedicated track-focused braking solutions, offering professional-grade performance for enthusiasts who demand the ultimate in stopping power and thermal management. The 2-piece design not only reduces weight compared to 1-piece rotors but also allows for easier rotor replacement without removing the center hat assembly.