Ksport BKMZ110-445SO DualComp Rear 4-Piston Big Brake Kit with 14 in. Slotted Rotors

The Ksport BKMZ110-445SO DualComp Big Brake Kit is a high-performance rear brake upgrade engineered for drivers who demand both aggressive stopping power and handbrake functionality in a single, integrated solution. Developed with drifting and rally racing applications in mind, this kit delivers race-proven braking performance in a complete, bolt-on package.

At the heart of the DualComp system is an innovative single 4-piston caliper with a dual-purpose design: two pistons are dedicated to the foot brake circuit, while the remaining two pistons power an independent handbrake circuit. Each circuit operates entirely on its own hydraulic system, providing precise, isolated control over both functions without compromise.

Two-Piece Floating Rotor Technology:

• Rotor diameter: 356 mm (14 inches), slotted style for enhanced heat dissipation and consistent bite
• Two-piece floating rotor construction allows the outer ring to expand and contract independently, dramatically reducing the risk of warping under extreme heat
• Rotor center hats are crafted from 6061-T6 aircraft-grade aluminum, reducing rotational mass and enabling faster, sharper brake response
• Rotor weight is commonly up to 50% lighter than OEM rotors of equivalent size
• Aluminum center hats act as heat sinks, transferring heat away from the rotor surface more efficiently than steel

Kit Components & Hardware:

• 4-piston DualComp rear calipers
• 14-inch slotted floating brake disc
• Performance brake pads
• Polished titanium handbrake cylinder and lever
• CNC-machined carbon steel caliper brackets for OEM mounting location compatibility
• D.O.T.-compliant stainless-steel braided brake lines
• All required installation hardware

Additional Highlights:

• Formula Drift legal big brake kit
• Rear axle position; designed for 2WD vehicles only
• Caliper type: 4-piston
• Bolt-on installation with minimal tools required in most applications — no vehicle modifications needed
• Note: OEM handbrake will not function after installation of this kit

The Ksport DualComp Big Brake Kit is the definitive choice for performance drivers seeking a fully integrated foot brake and handbrake solution that is tested and proven on rally and drift circuits worldwide.