Brembo 203.9015A 2-Piece Brake Rotor Disc Set 380x34mm Front

The Brembo 203.9015A is a front 2-piece brake disc set featuring 380x34mm rotors designed as a direct upgrade over heavy OEM single-piece rotors. This complete axle set arrives pre-assembled and includes all necessary mounting hardware for a straightforward installation.

Brembo's 2-piece disc construction pairs a cast iron outer braking ring with a lightweight aluminum bell/hat, connected via floating H-bobbin hardware with anti-rattle springs. This design delivers meaningful unsprung and rotating mass reduction compared to conventional one-piece iron rotors, contributing to improved handling, acceleration, and braking response.

Key Features:

• 2-Piece Disc Construction: Aluminum bell mated to an advanced high carbon alloy iron braking ring
• Disc Size: 380mm diameter x 34mm width (15-inch)
• Floating Mounting System: H-Bobbin hardware with anti-rattle springs allows thermal expansion without rotor warping or cracking
• Vented Curved Vane Design: Optimized airflow for high thermal capacity and heat dissipation
• Corrosion Resistant Plating: Applied to the hat and non-swept surfaces
• OEM Caliper Compatible: Designed to work seamlessly with stock or OEM-equivalent calipers
• Complete Axle Set: Includes both left and right disc assemblies
• Pre-Assembled: Ready to install with all necessary hardware included

Brembo's floating 2-piece rotor technology allows the iron disc and aluminum hat to expand independently under thermal stress, reducing permanent thermal deformation and extending rotor service life. These discs are engineered to Brembo's OEM-grade standards, ensuring the same level of quality found on factory high-performance vehicles where Brembo serves as the original equipment supplier.