Brembo 4K3.9016AX PISTA 4 TY3 Disc Brake Upgrade Kit Rear 380x28 Slotted

The Brembo 4K3.9016AX is a rear big brake upgrade kit from Brembo's Race Systems lineup, featuring the PISTA 4 TY3 configuration. At the heart of the kit is a 4-piston, forged two-piece radial mount caliper finished in black hard anodizing, paired with a 380x28x54a two-piece disc. The rotor is manufactured from advanced high carbon alloy iron, left unplated, and designed with a slotted Type-3 face and curved vented vanes for aggressive heat evacuation under sustained braking loads. A full floating D-bobbin disc-to-hat mounting system accommodates thermal expansion while maintaining consistent rotor alignment — a hallmark of serious track-focused brake engineering.

Key Features:

• Rear system — 380 x 28 mm two-piece slotted Type-3 discs with curved vented vane design
• 4-piston forged two-piece radial mount caliper, black hard anodized finish
• Inner pressure seal with stainless steel piston insert for consistent pedal feel
• Full floating D-bobbin disc-to-hat mounting for thermal expansion management
• Advanced high carbon alloy disc material, unplated
• Brembo-engineered CNC billet caliper adapters included
• All necessary hardware included for ease of installation
• Part of the Brembo Race Systems product segment

Designed for drivers who demand race-grade stopping power at the rear axle, this Brembo PISTA kit delivers the engineering precision and component quality synonymous with the Brembo Race Systems range. The inclusion of CNC billet caliper adapters and all required hardware streamlines installation.