Brembo 4K3.9004A PISTA 6-Piston Rear Brake Kit 380x32mm TY3 2-Piece Discs

The Brembo 4K3.9004A PISTA is a professional-grade rear brake system engineered for extreme track and racing applications. This complete rear axle kit features Brembo's high-performance 6-piston calipers paired with 380mm diameter TY3 2-piece floating discs, delivering race-proven stopping power with superior thermal management.

TY3 Performance Disc Technology:

The TY3 (Type 3) slotted disc design represents decades of motorsport engineering, extensively used in professional GT racing and endurance championships including the 24 Hours of Le Mans. The precision-engineered slot pattern continuously refreshes the pad friction surface, removing glazing and contaminants to maintain consistent bite and modulation throughout extended track sessions.

2-Piece Floating Construction:

• 380mm diameter x 32mm thick high-carbon cast iron braking surface with corrosion-resistant plating
• 53mm annulus dimension for optimal thermal capacity
• 6061-T6 billet aluminum hat/bell reduces unsprung weight and improves vehicle dynamics
• 72-vane curved ventilation design maximizes airflow and heat dissipation
• Floating D-type bobbin mounting system with anti-rattle springs allows thermal expansion without warping

PISTA 6-Piston Caliper System:

• Forged 2-piece caliper bodies engineered for maximum rigidity and race durability
• 6-piston configuration provides exceptional clamping force distribution
• Radial mount design for precise caliper positioning
• Stainless steel piston inserts with inner pressure seals
• Complete with pre-assembled hardware and Brembo stainless steel braided brake lines

Application:

This rear brake system is designed for serious track enthusiasts and competitive racers who demand professional-level braking performance. The PISTA range bridges the gap between high-performance street systems and full race specifications, offering track-proven technology at reduced cost compared to top-tier racing systems.

What's Included:

• Qty (2) 380x32mm TY3 2-piece floating discs with aluminum hats
• Complete rear axle caliper set with mounting hardware
• All necessary installation hardware pre-assembled
• Brembo proprietary stainless steel braided brake lines

Note: Many PISTA systems require modification to or removal of OEM dust shields or backing plates. Professional installation recommended. This system is intended for track and race use.