Ksport BKVW430-435CO DualComp Rear Big Brake Kit 4-Piston 13 in. Drilled Rotors

The Ksport BKVW430-435CO DualComp Big Brake Kit is an all-in-one dual-function rear brake upgrade engineered for high-performance driving. Designed with drifting and rally racing in mind, the DualComp system integrates a single 4-piston caliper that simultaneously serves two independent braking circuits — 2 pistons dedicated to the foot brake and 2 pistons dedicated to the handbrake — each operating on its own fully independent hydraulic system. This Formula Drift legal big brake kit is compatible with 17-inch wheels and larger.

Two-Piece Floating Rotor Design:

All DualComp kits feature a lightweight two-piece floating brake disc construction. The outer rotor ring is paired with a center hat section machined from 6061-T6 aircraft-grade aluminum, reducing rotational mass by up to 50% compared to OEM one-piece rotors of the same diameter. The floating design allows the outer ring to expand and contract independently, dramatically reducing the risk of heat-induced warping. The aluminum center section also acts as a heat sink, dissipating thermal energy away from the hub assembly more efficiently than steel.

Key Features:

• Caliper Type: 4-Piston (2-pot foot brake / 2-pot handbrake), fully independent circuits
• Rotor Diameter: 330 mm (13 in.) drilled
• Position: Rear
• Rotor Style: Drilled floating two-piece
• Rotor Weight: Up to 50% lighter than OEM equivalent rotors
• Polished titanium handbrake cylinder and lever included
• CNC-machined carbon steel caliper brackets for direct bolt-on fitment to OEM bracket locations
• D.O.T.-compliant stainless-steel braided brake lines included
• Formula Drift legal — tested and proven on drift and rally circuits
• Compatible with 17-inch wheels and above

What's Included:

• 4-Piston DualComp caliper(s)
• Floating drilled brake disc(s)
• Brake pads
• Polished titanium handbrake cylinder and lever
• CNC-machined carbon steel caliper bracket(s)
• D.O.T.-compliant stainless-steel braided brake line(s)
• All required installation hardware

Installation is straightforward with minimal tools required and no permanent vehicle modifications needed in most applications. This is a complete bolt-on big brake kit — everything needed for installation is included in the box.