Ksport BKBM300-445SO DualComp Rear 4 Piston Big Brake Kit 14 in. Slotted Rotors

The Ksport BKBM300-445SO DualComp Big Brake Kit is a complete, all-in-one dual-function rear brake upgrade engineered for high-performance driving. Designed with drifting and rally racing in mind, the DualComp system integrates a single 4-piston caliper that simultaneously handles both foot brake and handbrake duties — with 2 pistons dedicated to each function, each operating independently on its own hydraulic circuit.

Key Features:

• Dual-function 4-piston caliper: 2 pots for the foot brake and 2 pots for the handbrake, running fully independent of each other
• 14-inch (356mm) slotted floating brake disc: Slotted rotor style recommended for track and performance driving applications
• Lightweight two-piece rotor design: Rotors can weigh up to 50% less than OEM rotors of the same size, reducing rotational mass for faster brake response
• 6061-T6 aircraft-grade aluminum rotor centers: Aluminum acts as an effective heat sink, dispersing heat away from the rotor faster to reduce fade and warping
• Polished titanium handbrake cylinder and lever: Included for improved feel, aesthetics, and driving control
• CNC machined carbon steel caliper brackets: Allow the oversized calipers to bolt directly onto OEM caliper bracket mounting locations
• DOT-compliant stainless-steel braided brake lines: Prevent line expansion under pressure for consistent, firm pedal feel
• Formula Drift legal: Approved for use in competitive drifting events
• Complete bolt-on kit: Includes calipers, floating brake disc, brake pads, handbrake hardware, and all required installation hardware

Installation is straightforward with minimal tools required and no vehicle modifications needed in most applications. The DualComp system is a significant upgrade over OEM rear brakes, delivering fade-free stopping power whether on the street or the track. All Ksport DualComp Big Brake Kits are backed by a 12-month manufacturer defect warranty.