Ksport BKMZ110-435SO DualComp Rear Big Brake Kit Slotted Rotors - 4-Piston 13in

The Ksport BKMZ110-435SO DualComp Big Brake Kit is a complete rear big brake upgrade engineered for performance-focused driving including drifting and rally racing. This innovative system features a single 4-piston caliper with a dual-circuit design — two pistons dedicated to the foot brake and two pistons dedicated to the handbrake — each operating independently on its own hydraulic system for precise, simultaneous braking control.

Key Features:

• Dual-circuit 4-piston caliper — foot brake and handbrake circuits fully independent
• 13-inch (330mm) two-piece slotted floating brake rotor — optimized for track and performance use
• Lightweight two-piece rotor design — can weigh up to 50% less than OEM rotors of comparable size
• 6061-T6 aircraft-grade aluminum rotor center — reduces rotational mass for sharper, more responsive braking
• Polished titanium handbrake cylinder and lever included for improved feel and driving control
• CNC machined carbon steel caliper brackets — bolt directly to OEM caliper bracket locations
• D.O.T. compliant stainless-steel braided brake lines included as standard
• Formula Drift legal — tested and proven on drift and rally circuits
• Designed for 17-inch wheels and above
• Complete bolt-on installation — minimal tools required, no vehicle modifications needed in most applications

The slotted rotor design is recommended for performance and track-driven applications, providing aggressive bite and effective outgassing under sustained high-heat braking. The two-piece rotor construction allows the outer ring to expand and contract independently from the aluminum center section, significantly reducing the risk of warping under thermal stress.

This is a complete kit that includes calipers, floating brake disc, brake pads, handbrake hardware, and all required installation hardware. Note: The OEM handbrake will not function once this kit is installed, as the DualComp system replaces that function entirely.