Ksport BKVW040-435CO DualComp Rear Big Brake Kit 4-Piston 13 in. Drilled Rotors

The Ksport DualComp Big Brake Kit (BKVW040-435CO) is a complete rear big brake upgrade engineered for high-performance driving disciplines including drifting and rally racing. This innovative system integrates both foot brake and handbrake functions into a single, compact 4-piston caliper — two pistons dedicated to the foot brake and two dedicated to the handbrake — each operating on its own fully independent hydraulic circuit.

Key Features:

• Dual-function 4-piston caliper — combines foot brake and handbrake into one unit, each running independently
• 330mm (13 in.) drilled floating brake rotor for improved heat dissipation and fade resistance
• Two-piece rotor construction with a 6061-T6 aircraft-grade aluminum center hat — up to 50% lighter than OEM rotors of the same size
• Polished titanium handbrake cylinder and lever included for enhanced feel and control
• CNC machined carbon steel caliper brackets allow direct bolt-on fitment to OEM caliper bracket locations
• D.O.T.-compliant stainless-steel braided brake lines included as standard
• Formula Drift legal — tested and proven on competitive drift and rally circuits
• Rear axle position; designed for 2WD vehicles
• Compatible with 17-inch wheels and above

The two-piece rotor design allows the outer ring to expand and contract independently from the aluminum center section, dramatically reducing the risk of rotor warping under sustained heat load. The aluminum center hat also acts as a heat sink, drawing thermal energy away from the braking surface faster than traditional one-piece OEM rotors.

Installation is straightforward — this is a complete bolt-on system requiring minimal tools and no permanent vehicle modifications in most applications. Everything needed for installation is included in the kit: calipers, floating brake disc, brake pads, handbrake components, and all required hardware. Note: This kit is built to order.