Ksport BKFD240-445SO DualComp Rear 4-Piston Big Brake Kit with 14 in. Slotted Rotors

The Ksport DualComp Big Brake Kit is a complete, all-in-one dual-function 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 where 2 pistons are dedicated to the foot brake and 2 pistons are dedicated to the handbrake — each circuit operating fully independent of the other on its own hydraulic system.

This kit includes a 14-inch (356mm) slotted floating brake disc mounted to a two-piece rotor design. The lightweight center hat is crafted from 6061-T6 aircraft-grade aluminum, which reduces rotational mass for faster brake response and acts as a heat sink to dissipate thermal buildup away from the hub assembly. The outer rotor ring can expand and contract independently from the center section, significantly reducing the risk of warping under extreme heat. Rotor weight is commonly up to 50% less than OEM rotors of the same size.

Caliper brackets are CNC machined from carbon steel, allowing the larger-than-OEM calipers to bolt directly to the factory caliper bracket location without vehicle modification. The system also includes a polished titanium handbrake cylinder and lever for refined feel and precise handbrake control. D.O.T.-compliant stainless-steel braided brake lines are included as standard.

Kit Includes:

• 4-Piston rear caliper (dual-circuit)
• 14 in. (356mm) slotted floating two-piece 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

Key Specifications:

• Rotor Diameter: 356mm / 14 in.
• Caliper Type: 4-Piston (Dual-Circuit)
• Rotor Style: Slotted
• Position: Rear
• Minimum Wheel Size: 18 in.
• Formula Drift Legal: Yes

The DualComp Big Brake Kit is Formula Drift legal and designed for straightforward bolt-on installation with minimal tools required and no permanent vehicle modifications in most applications. Compatible with 18-inch wheels and above. Note: Ksport Big Brake Kits are designed for 2WD vehicles only unless otherwise stated.