Ksport BKAU430-435CO DualComp Rear Big Brake Kit Drilled Rotor - 4-Piston 13in

The Ksport DualComp Big Brake Kit is a complete rear braking upgrade engineered for serious performance on the drift circuit and rally stage. Built around an innovative dual-function design, this kit integrates both foot brake and handbrake operation into a single compact 4-piston caliper — eliminating the need for a separate handbrake caliper while delivering precise, independent control over each braking system.

Dual-Function 4-Piston Caliper: The heart of the DualComp system is its single 4-pot caliper: 2 pistons dedicated to the hydraulic foot brake and 2 pistons dedicated to the handbrake, each running on its own independent hydraulic circuit. This makes the DualComp an ideal solution for drifting and rally applications where precise rear brake bias and handbrake control are critical.

Key Features:

• Formula Drift legal — tested and proven on professional drift and rally circuits
• 13-inch (330mm) two-piece floating drilled rotor — delivers fade-free performance with significantly reduced rotational mass
• 6061-T6 aircraft-grade aluminum rotor hat — up to 50% lighter than OEM one-piece rotors of equivalent size
• Floating rotor design — outer ring expands and contracts independently to minimize warping under extreme heat
• Polished titanium handbrake cylinder and lever — enhances handbrake feel and aids in precise vehicle control
• CNC-machined carbon steel caliper brackets — bolt directly to the OEM caliper bracket location with no vehicle modifications required
• D.O.T.-compliant stainless-steel braided brake lines — included as standard equipment
• Compatible with 17-inch wheels and above
• 12-month manufacturer warranty covering defects

Complete Bolt-On Kit — Everything Included:

• 4-piston DualComp caliper
• 13-inch floating drilled brake disc
• Performance brake pads
• Handbrake assembly hardware
• All required mounting hardware

The DualComp system installs with minimal tools and requires no permanent vehicle modifications in most applications, making it a straightforward upgrade for track-focused builds. Rotor options are also available in slotted configuration — cross-drilled rotors are recommended for street-driven vehicles for cooler operation, while slotted rotors are preferred for dedicated track use.