Ksport BKMZ050-445SO DualComp Rear 4-Piston Big Brake Kit with 14 in. Slotted Rotors

The Ksport BKMZ050-445SO DualComp Big Brake Kit is a complete rear brake upgrade engineered for high-performance driving, drifting, and rally racing applications. This innovative dual-caliper system integrates both the foot brake and handbrake into a single compact 4-piston caliper, with 2 dedicated pistons for each function operating independently on their own hydraulic circuits.

The slotted floating brake rotor measures 356mm (14 inches) in diameter and features a two-piece design with a 6061-T6 aircraft-grade aluminum center hat. This construction significantly reduces rotational mass compared to OEM one-piece rotors and allows the outer ring to expand and contract independently, greatly reducing the risk of warping under sustained heat buildup. The aluminum center section also acts as an efficient heat sink, channeling thermal energy away from the braking surface.

Key Features:

• Single 4-piston caliper with dual-circuit design — 2 pistons dedicated to the foot brake, 2 to the handbrake
• Foot brake and handbrake circuits operate fully independently of each other
• 356mm (14 in.) slotted floating two-piece brake rotor
• 6061-T6 aircraft-grade aluminum rotor center hat for reduced rotational mass
• Polished titanium handbrake cylinder and lever included
• CNC-machined carbon steel caliper brackets for direct bolt-on fitment at OEM bracket location
• D.O.T.-compliant stainless steel braided brake lines included
• Formula Drift legal
• Compatible with 18-inch wheels and larger
• Designed for 2WD vehicles

What's Included:

• 4-piston DualComp caliper(s)
• Slotted floating brake disc(s)
• 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 mounting hardware

The Ksport DualComp system installs with minimal tools and requires no permanent vehicle modifications in most applications, making it an accessible performance upgrade for track-focused builds and competitive motorsport use.