Brembo 4K3.8039A PISTA 4 TY3 Rear Racing Brake Discs 345x28mm 2-Piece

The Brembo 4K3.8039A PISTA 4 TY3 is a professional-grade rear brake disc set designed exclusively for motorsports and track day use. These 2-piece racing discs measure 345mm in diameter by 28mm thick with a 54mm center bell height, delivering the exceptional performance demanded by competitive racing environments.

TY3 Slot Pattern Technology:

• Type 3 slotting extensively used in professional motorsports including GT racing and endurance events
• Aggressive groove machining provides high initial bite with excellent release characteristics
• Continuously refreshes pad friction surface and removes glazing residues for consistent performance
• Superior modulation and pedal feel throughout extended track sessions

2-Piece Construction Benefits:

• CNC-machined 6061-T6 aluminum bell/hat reduces unsprung weight for improved handling and braking response
• High-carbon alloy steel braking surface with corrosion-resistant plating
• Wide air-gap design maximizes heat dissipation and thermal capacity
• D-type bobbin mounting hardware with anti-rattle springs included
• Fully floating design allows optimal radial and axial float under extreme temperatures

Race-Proven Performance:

Brembo PISTA components represent the pinnacle of racing brake technology, engineered to deliver consistent stopping power under the most extreme conditions. The TY3 disc pattern has been proven in professional endurance racing, including the 24 Hours of Le Mans and international GT championships, where maintaining bite and consistency over long stints is critical.

What's Included:

• Two (2) complete 2-piece rear brake disc assemblies
• CNC-machined aluminum bells with hard anodized finish
• Complete mounting hardware with anti-rattle springs

This rear axle set is designed to work with Brembo Racing calipers and is intended exclusively for track and race use. PISTA systems are not street legal and should only be used in dedicated motorsports applications.