Ksport BKAU031-445SO DualComp Rear Big Brake Kit 4-Piston 14 in. Slotted Rotors

The Ksport DualComp Big Brake Kit is a complete rear brake upgrade engineered for serious performance driving. Designed with drifting and rally racing in mind, this system features a single 4-piston caliper with a split function: two pistons dedicated to the foot brake and two pistons dedicated to the handbrake — each operating independently on its own hydraulic circuit for precise, isolated control.

The DualComp kit ships as a complete, ready-to-install package requiring minimal tools and no permanent vehicle modifications in most applications. The system mounts directly to the OEM caliper bracket location using included CNC-machined carbon steel caliper brackets, making it a true bolt-on upgrade.

Key Features:

• Dual-function 4-piston caliper — 2 pots for foot brake, 2 pots for handbrake, each running on independent hydraulic systems
• 14-inch (356mm) two-piece floating slotted rotor — up to 50% lighter than OEM rotors of equivalent size
• 6061-T6 aircraft-grade aluminum rotor hat — reduces rotational mass for faster brake response
• Floating rotor design — outer ring expands and contracts independently, greatly reducing the risk of heat-induced warping
• Polished titanium handbrake cylinder and lever included for refined feel and improved handbrake control
• CNC-machined carbon steel caliper brackets for a precise OEM-location bolt-on fit
• D.O.T.-compliant stainless steel braided brake lines included as standard
• Formula Drift legal — tested and proven on drift and rally circuits
• Appropriate for 18-inch wheels and above
• Includes: calipers, floating brake disc, brake pads, handbrake hardware, and all required installation hardware

The slotted rotor style is recommended for track and performance driving applications, offering aggressive bite and effective heat dissipation under demanding conditions. The DualComp system is backed by a 12-month manufacturer's warranty covering defects in materials and workmanship.