Ksport BKAU060-434SO DualComp Rear 4-Piston Big Brake Kit with 13 in. Slotted Rotors

The Ksport DualComp Big Brake Kit (BKAU060-434SO) is a complete, bolt-on rear brake upgrade engineered for high-performance driving. Designed with drifting and rally racing in mind, the DualComp system features an innovative single 4-piston caliper that serves a dual purpose: two pistons dedicated to the foot brake circuit and two pistons independently dedicated to the handbrake circuit — each operating on its own fully independent hydraulic system.

The kit ships with everything required for a complete installation, including a two-piece floating slotted brake disc, high-performance brake pads, a polished titanium handbrake cylinder and lever, CNC-machined carbon steel caliper brackets, DOT-compliant stainless-steel braided brake lines, and all required mounting hardware. No additional parts are needed.

Key Features:

• Dual-function 4-piston caliper — 2 pistons for foot brake, 2 pistons for handbrake, each on independent hydraulic systems
• 330mm (13 in.) slotted floating rotor — two-piece design with a 6061-T6 aircraft-grade aluminum center hat for reduced rotational mass
• Up to 50% lighter than OEM rotors of equivalent size for faster brake response
• Reduced heat warping — outer rotor ring expands and contracts independently from the aluminum center section
• Polished titanium handbrake cylinder and lever included for improved feel and driving control
• CNC-machined carbon steel caliper brackets for precise OEM mounting location fitment
• DOT-compliant stainless-steel braided brake lines included as standard
• Formula Drift legal — tested and proven on professional drift and rally circuits
• Bolt-on installation — minimal tools required, no vehicle modifications needed in most applications
• Suitable for 17-inch wheels and larger

Specifications:

• Rotor Diameter: 330mm / 13 in.
• Rotor Style: Slotted
• Caliper Type: 4-Piston
• Position: Rear

Important Notes: The OEM handbrake will not function after installation of this kit — the DualComp system replaces the factory handbrake mechanism. This kit is designed for 2WD vehicles only.