Ksport BKAU081-444CO DualComp Rear 4-Piston Big Brake Kit with 14 in. Drilled Rotors

The Ksport BKAU081-444CO DualComp Big Brake Kit is an innovative all-in-one dual-function brake upgrade engineered for performance driving. Unlike traditional big brake setups, the DualComp system integrates both foot brake and handbrake operation into a single 4-piston caliper — with 2 pistons dedicated to the hydraulic foot brake and 2 pistons operating the handbrake, each running on its own fully independent circuit.

Designed with drifting and rally racing in mind, this kit is Formula Drift legal and delivers the stopping power and handbrake response demanded by competitive motorsport. The system features lightweight two-piece floating brake rotors — commonly up to 50% lighter than OEM rotors of the same size — with a cross-drilled rotor face for improved heat dissipation, making it well-suited for street-driven performance vehicles.

Key Features:

• Innovative dual-function 4-piston caliper — 2 pots for foot brake, 2 pots for handbrake, each on independent hydraulic circuits
• Formula Drift legal big brake kit
• Lightweight two-piece floating brake disc — up to 50% lighter than OEM rotors of equivalent size
• Cross-drilled rotor design for reduced heat buildup, ideal for street and occasional track use
• Includes NAOC ceramic brake pads with optimal operating range of 194°F – 1,022°F
• Ceramic pads reduce brake dust by 50% or more compared to race pads, with lower noise and reduced rotor wear
• D.O.T.-compliant stainless-steel braided brake lines included — resist expansion under pressure for firmer, more responsive pedal feel
• Complete bolt-on installation — minimal tools required, no vehicle modifications needed in most applications
• 12-month warranty covering manufacturer defects

What's Included:

• DualComp 4-piston caliper(s)
• Floating brake disc (cross-drilled)
• NAOC ceramic brake pads
• Handbrake hardware
• Stainless-steel braided brake lines
• All required mounting hardware

Important Notes:

• OEM handbrake will NOT function after installation — this kit replaces the OEM handbrake system
• Ksport Big Brake kits are built to order — please allow 4–6 weeks for production and delivery
• Ksport Big Brake kits are designed for 2WD vehicles unless otherwise stated