Ksport BKLX180-435CO DualComp Rear Big Brake Kit with Drilled Floating Rotor - 4-Piston

The Ksport DualComp Big Brake Kit is a complete rear braking upgrade engineered for high-performance driving. Designed with drifting and rally racing in mind, this system delivers the stopping power and handbrake precision demanded on the track — while remaining fully street-legal and easy to install.

At the heart of the DualComp system is a single 4-piston caliper with a split-function design: two pistons are dedicated to the foot brake circuit, and two pistons are dedicated to the handbrake circuit. Each circuit operates fully independently on its own hydraulic system, giving drivers precise and separate control over braking and handbrake inputs.

Key Features:

• Dual-function 4-piston caliper — independent foot brake and handbrake circuits in a single unit
• Floating two-piece drilled rotor — lightweight design that can weigh up to 50% less than OEM rotors of the same size
• 6061-T6 aircraft-grade aluminum rotor center — reduces rotational mass for faster, more responsive braking
• Independent rotor expansion — outer rotor ring expands and contracts separately from the center hat, significantly reducing warp risk under heat
• CNC-machined carbon steel caliper brackets — bolt directly to OEM caliper bracket locations for a clean, no-modification installation
• Polished titanium handbrake cylinder and lever — enhances feel and assists with precise vehicle control
• D.O.T.-compliant stainless-steel braided brake lines — included as standard
• Cross-drilled rotor option — recommended for daily-driven vehicles for cooler running temperatures
• Formula Drift legal — approved for competitive motorsport use
• 12-month warranty covering manufacturer defects

Complete Kit Includes: 4-Piston Rear Caliper(s), Floating Brake Disc, Brake Pads, Handbrake Assembly, CNC Caliper Brackets, Stainless Braided Brake Lines, and all required installation hardware.

Installation is straightforward with minimal tools required and no permanent vehicle modifications needed in most applications. This kit is built to order — please allow 4–6 weeks for production and delivery. Compatible with 2WD vehicles only unless otherwise noted.