Ksport BKVW361-435CO DualComp Rear 4-Piston Big Brake Kit with 13 in. Drilled Rotors

The Ksport DualComp Big Brake Kit (BKVW361-435CO) is a complete, bolt-on rear brake upgrade engineered for high-performance driving, drifting, and rally racing. This innovative system integrates both the foot brake and handbrake into a single, compact 4-piston caliper — with 2 pistons dedicated to the service brake and 2 pistons dedicated to the handbrake, each operating independently on its own hydraulic circuit.

At the heart of the kit is a 13-inch (330mm) drilled, two-piece floating rotor featuring a 6061-T6 aircraft-grade aluminum center hat and a steel outer ring. The two-piece construction allows the outer rotor face to expand and contract independently, dramatically reducing the risk of heat-related warping. The aluminum center also acts as a heat sink, dissipating thermal energy away from the rotor and hub more efficiently than standard one-piece designs. These rotors commonly weigh up to 50% less than OEM rotors of the same size, reducing unsprung and rotational mass for sharper brake response.

Key Features:

• Dual-function 4-piston caliper — 2 pistons for foot brake, 2 pistons for handbrake, running on fully independent hydraulic circuits
• 13 in. (330mm) drilled two-piece floating rotor — lightweight, fade-resistant design for track and street use
• 6061-T6 aircraft-grade aluminum rotor center hat — reduces rotational mass and acts as a heat sink
• Polished titanium handbrake cylinder and lever — improves feel and control during handbrake inputs
• CNC-machined carbon steel caliper brackets — bolt directly to OEM caliper mounting location; no chassis modifications required
• D.O.T.-compliant stainless-steel braided brake lines — included standard for consistent pedal feel
• Formula Drift legal — tested and proven on professional drift and rally circuits
• Complete bolt-on kit — includes calipers, floating brake disc, brake pads, handbrake components, and all required hardware
• Designed for 17-inch wheels and larger
• Compatible with 2WD applications only

The Ksport DualComp system is the preferred choice for drivers seeking a single integrated solution for both braking systems in competition or performance street applications. Installation requires minimal tools with no vehicle modifications needed in most fitments.