Ksport BKBM030-445SO DualComp Rear 4-Piston Big Brake Kit with 14 in. Slotted Rotors

The Ksport BKBM030-445SO DualComp Big Brake Kit is a complete rear big brake upgrade engineered for performance driving applications including drifting and rally racing. At the core of the DualComp system is a single 4-piston caliper with a clever dual-function design: two pistons are dedicated to the foot brake circuit and two pistons operate the handbrake circuit, each running independently on its own hydraulic system. This innovative configuration eliminates the need for a separate handbrake caliper while delivering precise, independent control of both braking functions.

Key Features:

• Dual-function 4-piston caliper — 2 pots for foot brake, 2 pots for handbrake, each on independent hydraulic systems
• 14-inch (356mm) slotted floating rotor — two-piece design weighing up to 50% less than OEM rotors of the same size
• 6061-T6 aircraft-grade aluminum rotor center hat — reduces rotational mass for faster wheel deceleration and improved brake response
• Warp-resistant two-piece rotor design — outer ring expands and contracts independently, minimizing heat-related warping
• CNC machined carbon steel caliper brackets — bolt directly to OEM caliper bracket locations with no vehicle modification required
• Polished titanium handbrake cylinder and lever — enhances feel and aids in precise drift control
• D.O.T.-compliant stainless steel braided brake lines — included standard with the kit
• Formula Drift legal — designed and tested for competition use on drift and rally circuits
• Compatible with 18-inch wheels and above

What's Included:

• 4-piston DualComp rear calipers
• 14 in. slotted floating brake disc
• Performance brake pads
• Polished titanium handbrake cylinder and lever
• CNC machined carbon steel caliper brackets
• D.O.T.-compliant stainless steel braided brake lines
• All required installation hardware

The Ksport DualComp system installs with minimal tools and requires no permanent vehicle modifications in most applications, making it an accessible upgrade for both track builds and performance street cars. Note: This kit is designed for 2WD vehicles only. Ksport big brake kits are built to order.