Ksport BKAU081-434SO DualComp Rear 4-Piston Big Brake Kit with 13 in. Slotted Rotors

The Ksport BKAU081-434SO DualComp Big Brake Kit is a complete rear brake upgrade engineered for drivers who demand independent foot brake and handbrake control from a single caliper assembly. Designed with drifting and rally racing in mind, this kit delivers race-proven stopping power in a clean, bolt-on package.

DualComp Dual-Function Caliper System:

• Single 4-piston caliper — 2 pistons dedicated to the foot brake circuit, 2 pistons dedicated to the handbrake circuit
• Each circuit operates fully independent on its own hydraulic system for precise, predictable control
• Formula Drift legal — tested and approved for competition use
• Compatible with 17-inch wheels and above

Two-Piece Floating Rotor Technology:

• 330mm (13 in.) slotted rotor for aggressive heat dissipation and consistent bite under hard braking
• Two-piece rotor construction allows the outer ring to expand and contract independently, greatly reducing warp risk from heat buildup
• Lightweight center section crafted from 6061-T6 aircraft-grade aluminum — rotors commonly weigh up to 50% less than OEM equivalents of the same size
• Aluminum center acts as an effective heat sink, conducting heat away from the rotor and hub assembly more efficiently than steel

Complete Bolt-On Kit Includes:

• 4-Piston DualComp Calipers
• Two-Piece Floating Slotted Brake Disc (330mm)
• Performance Brake Pads
• Handbrake Hardware
• All required installation hardware

The Ksport DualComp system is engineered for minimal installation complexity — no vehicle modifications required in most applications. Whether building a dedicated drift car or upgrading a street/track dual-purpose build, this kit provides the independent handbrake and foot brake performance that competitive driving demands. Covered by a 12-month warranty against manufacturer defects.

Note: OEM electronic or cable-actuated handbrake systems will not function with this kit. A hydraulic handbrake setup is required.