Ksport BKBM300-435CO DualComp Rear 4-Piston Big Brake Kit with 13 in. Drilled Rotors

The Ksport BKBM300-435CO DualComp Big Brake Kit is a complete rear brake upgrade engineered for high-performance driving, drift competition, and rally racing applications. At the heart of this system is an innovative dual-function 4-piston caliper that handles both the foot brake and handbrake from a single unit — eliminating the need for separate caliper assemblies while delivering precise, independent control of each braking circuit.

The DualComp system dedicates 2 pistons to the foot brake and 2 pistons to the handbrake, with each circuit operating fully independently on its own hydraulic system. This design makes it an ideal solution for drivers who require consistent, repeatable handbrake performance for drifting or rally stages without sacrificing foot brake feel or response.

Key Features:

• Rear 4-piston caliper with dual-circuit design for foot brake and handbrake independence
• 330mm (13 in.) cross-drilled floating brake rotor for superior heat dissipation and fade-free performance
• Two-piece rotor construction with a 6061-T6 aircraft-grade aluminum center section — up to 50% lighter than OEM rotors of the same size
• Polished titanium handbrake cylinder and lever included for refined feel and improved braking control
• CNC-machined carbon steel caliper brackets allow direct bolt-on fitment to the OEM caliper bracket location
• SC1 street brake pads included
• D.O.T.-compliant stainless steel braided brake lines included
• Compatible with 17-inch wheels and larger
• Formula Drift legal — tested and proven on drift and rally circuits
• Complete bolt-on kit — no vehicle modifications required in most applications

What's Included:

• 4-Piston DualComp Caliper(s)
• 330mm Floating Cross-Drilled Brake Rotor(s)
• SC1 Street Brake Pads
• Polished Titanium Handbrake Cylinder and Lever
• CNC-Machined Carbon Steel Caliper Bracket(s)
• D.O.T. Stainless Steel Braided Brake Lines
• All Required Hardware

Rotor Diameter: 330mm / 13 in. | Rotor Width: 32mm | Rotor Style: Cross-Drilled | Caliper Type: 4-Piston | Position: Rear