Ksport BKVW180-435CO DualComp Rear 4-Piston Big Brake Kit with 330mm Drilled Rotor

The Ksport BKVW180-435CO DualComp Big Brake Kit is a complete, bolt-on rear brake upgrade engineered for high-performance driving and motorsport applications. Designed with drifting and rally racing in mind, this rear big brake kit delivers superior stopping power while integrating a fully functional hydraulic handbrake — all within a single, compact 4-piston caliper assembly.

At the heart of the DualComp system is its innovative dual-function caliper design. The single 4-piston caliper dedicates 2 pistons to the foot brake circuit and 2 pistons to the handbrake circuit, with each running completely independently on its own hydraulic system. This eliminates the need for a separate handbrake caliper, saving weight and simplifying the overall brake package.

Two-Piece Floating Rotor Technology:

• 330mm (13 in.) drilled floating brake rotor with a lightweight 6061-T6 aircraft-grade aluminum center hat
• Two-piece rotor construction allows the outer ring to expand and contract independently, significantly reducing the risk of warping under heat buildup
• Rotor weight commonly up to 50% less than OEM rotors of the same size, reducing rotational mass for faster brake response
• Aluminum center sections act as heat sinks, dissipating heat away from the rotor and hub assembly more efficiently

Caliper & Hardware Features:

• Single rear 4-piston caliper with split foot brake and handbrake circuits operating independently
• Polished titanium handbrake cylinder and lever included for improved feel and precision control
• CNC-machined carbon steel caliper brackets allow bolt-on installation to OEM caliper bracket locations
• D.O.T.-compliant stainless-steel braided brake lines included as standard

What's Included:

• 4-Piston DualComp rear caliper(s)
• 330mm two-piece floating drilled brake disc
• Performance brake pads
• Titanium handbrake cylinder and lever
• CNC-machined carbon steel caliper brackets
• Stainless-steel braided brake lines
• All required installation hardware

This kit is Formula Drift legal and is designed for 17-inch wheels and larger. Installation requires minimal tools with no permanent vehicle modifications needed in most applications. This is a made-to-order product — please allow 4–6 weeks for production and delivery. Covered by Ksport's 12-month warranty against manufacturer defects.