Ksport BKNS230-435CO DualComp Rear Big Brake Kit 4-Piston 13 in. Cross-Drilled Rotors

The Ksport BKNS230-435CO DualComp Big Brake Kit is a complete rear big brake upgrade engineered for high-performance driving. Designed specifically with drifting and rally racing in mind, this kit features Ksport's innovative dual-function caliper design that integrates both foot brake and handbrake into a single, compact 4-piston caliper unit — eliminating the need for a separate dedicated handbrake caliper.

The DualComp system uses a single 4-pot caliper where 2 pistons operate the foot brake circuit and 2 pistons operate the handbrake circuit. Each system runs completely independently, providing precise, reliable braking performance for both street and competition use. This big brake kit is Formula Drift legal.

Two-Piece Floating Rotor Design:

• 13-inch (330mm) cross-drilled floating brake disc — ideal for street and light track use, running cooler than slotted rotors
• Lightweight two-piece rotor construction commonly weighing up to 50% less than OEM rotors of the same size
• Center hat crafted from 6061-T6 aircraft-grade aluminum for reduced rotational mass and improved brake response
• Outer rotor ring expands and contracts independently from the center hat, significantly reducing the risk of heat-induced warping
• Aluminum center hat acts as a heat sink, dissipating thermal energy away from the hub assembly

Caliper & Hardware Features:

• Single 4-piston caliper with dual-circuit design — 2 pots for foot brake, 2 pots for handbrake
• Polished titanium handbrake cylinder and lever included for improved handbrake feel and precision
• 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

Complete Kit Includes:

• 4-Piston DualComp caliper(s)
• 13 in. cross-drilled floating brake disc(s)
• High-performance brake pads
• Polished titanium handbrake cylinder and lever
• CNC machined caliper bracket(s)
• D.O.T. compliant stainless-steel braided brake lines
• All required installation hardware

The Ksport DualComp big brake system is a true bolt-on upgrade requiring minimal tools and no permanent vehicle modifications in most applications. This kit covers fade-free performance on both the street and track, and is backed by Ksport's 12-month manufacturer defect warranty.