Ksport BKAU060-445SO DualComp Rear 4-Piston Big Brake Kit with 14 in. Slotted Floating Rotor

The Ksport BKAU060-445SO DualComp Big Brake Kit is a complete rear brake upgrade engineered for high-performance driving, drifting, and rally racing applications. This Formula Drift legal big brake kit features an innovative dual-function 4-piston caliper design that integrates both the foot brake and handbrake into a single, compact unit — eliminating the need for a separate handbrake caliper.

Dual-Function 4-Piston Caliper System:

• Single 4-pot caliper with 2 pistons dedicated to the foot brake and 2 pistons dedicated to the handbrake
• Each braking circuit operates fully independently on its own hydraulic system
• Includes a polished titanium handbrake cylinder and lever for precise handbrake control and enhanced aesthetics
• CNC-machined carbon steel caliper brackets allow the larger-than-OEM calipers to bolt directly to the factory caliper bracket location

Lightweight Two-Piece Floating Rotor:

• 14-inch (356mm) slotted floating brake disc for fade-free performance under sustained heavy braking
• Two-piece rotor construction with a 6061-T6 aircraft-grade aluminum center hat reduces rotational mass — rotors commonly weigh up to 50% less than OEM equivalents
• Floating outer ring can expand and contract independently from the aluminum center, significantly reducing the risk of heat-induced rotor warp
• Aluminum center sections act as heat sinks, conducting thermal energy away from the braking surface more efficiently than OEM cast iron rotors

Complete Bolt-On Kit — Everything Included:

• 4-Piston DualComp calipers
• 14 in. slotted two-piece 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

Installation is straightforward with minimal tools required and no permanent vehicle modifications needed in most applications. The Ksport DualComp system is the ideal choice for drivers seeking a proven, competition-tested rear big brake upgrade that integrates seamlessly with both street and motorsport use.