Ksport BKAU098-445SO DualComp Rear Big Brake Kit Slotted Rotor - 4-Piston 14in

The Ksport BKAU098-445SO DualComp Big Brake Kit is a complete rear brake upgrade engineered for high-performance driving. Designed with drifting and rally racing in mind, this innovative system features a single 4-piston caliper that serves a dual purpose — two pistons dedicated to the foot brake and two pistons dedicated to the handbrake, with each circuit operating independently on its own system.

Key Features:

• Dual-function 4-piston caliper — 2 pots for foot brake, 2 pots for handbrake, each running on independent hydraulic circuits
• 356mm (14 in.) slotted floating brake disc — lightweight two-piece rotor design reduces weight by up to 50% compared to OEM rotors of the same size
• 6061-T6 aircraft-grade aluminum rotor center sections — lower rotational mass for faster wheel deceleration and sharper brake response
• Polished titanium handbrake cylinder and lever — enhances handbrake feel, precision, and vehicle control
• CNC machined carbon steel caliper brackets — bolt directly to OEM caliper mounting locations with no vehicle modifications required
• D.O.T.-compliant stainless steel braided brake lines — included standard with every kit
• Formula Drift legal — tested and approved for competitive motorsport use
• Complete bolt-on installation — includes calipers, floating brake disc, brake pads, handbrake components, and all required hardware

The two-piece floating rotor design allows the outer ring to expand and contract independently from the aluminum center section, dramatically reducing the risk of rotor warping under sustained heat. The aluminum center also acts as an effective heat sink, dissipating thermal energy away from the rotor and hub assembly for consistent, fade-free braking performance. Suitable for 18-inch wheels and above.