Ksport BKMZ310-435CO DualComp Rear 4-Piston Big Brake Kit with 13 in. Drilled Rotors

The Ksport BKMZ310-435CO DualComp Big Brake Kit is a complete, bolt-on rear braking upgrade engineered for performance driving enthusiasts. Built with drifting and rally racing in mind, this system features a uniquely designed single 4-piston caliper that serves dual functions: two pistons dedicated to the foot brake circuit and two pistons dedicated to the handbrake circuit, each operating independently on its own hydraulic system.

This design eliminates the need for a separate handbrake caliper while delivering precise, independent control over both braking systems — making it an ideal solution for competition drivers who demand fast, reliable handbrake response alongside strong foot brake performance.

Key Features:

• Dual-Function 4-Piston Caliper — 2 pots for foot brake, 2 pots for handbrake, each running on independent hydraulic circuits
• Two-Piece Floating Rotor Design — 330mm (13 in.) drilled rotor with a 6061-T6 aircraft-grade aluminum center hat, weighing up to 50% less than OEM rotors of the same size
• Reduced Rotor Warping — Outer rotor ring expands and contracts independently from the aluminum center section, minimizing heat-induced warping
• CNC Machined Carbon Steel Caliper Brackets — Precision-machined to bolt directly to OEM caliper bracket locations without vehicle modification
• Polished Titanium Handbrake Cylinder and Lever — Enhances handbrake feel, response, and aesthetics
• D.O.T. Compliant Stainless Steel Braided Brake Lines — Included standard with every kit
• SC1 Street Brake Pads Included — Ready to install out of the box
• Formula Drift Legal — Tested and approved for use in sanctioned competition
• Minimal Tools Required — Designed for straightforward installation with no permanent vehicle modifications needed in most applications

What's Included:

• Rear 4-Piston Caliper(s)
• 330mm (13 in.) Two-Piece Floating Drilled Brake Disc(s)
• SC1 Street Brake Pads
• Polished Titanium Handbrake Cylinder and Lever
• CNC Machined Carbon Steel Caliper Bracket(s)
• D.O.T. Compliant Stainless Steel Braided Brake Lines
• All required mounting hardware

Rotor Specifications: Diameter: 330mm / 13 in. | Width: 32mm | Style: Drilled | Position: Rear

The Ksport DualComp system is built for drivers who need a race-proven, all-in-one braking solution that delivers superior stopping force, fade resistance, and handbrake precision — all in a clean, bolt-on package suitable for 17-inch wheels and larger.