Ksport BKVW360-435CO DualComp Rear 4-Piston Big Brake Kit with 13 in. Drilled Rotors

The Ksport DualComp Big Brake Kit is a complete, all-in-one dual-function braking solution engineered for high-performance driving. Designed with drifting and rally racing in mind, this rear big brake kit features a single 4-piston caliper where 2 pistons operate the foot brake and 2 pistons independently operate the handbrake — each running on its own dedicated hydraulic system. The result is precise, independent braking control for both street and competition use. This kit is Formula Drift legal and sized for 17-inch wheels and above.

Lightweight Forged Caliper Construction:

• Forged one-piece caliper machined from aerospace-grade aluminum billet — not cast or welded — for superior strength with no weak spots
• Aluminum caliper pistons protected by heavy-duty, high-temperature seals for consistent racetrack performance
• Opposed-piston design ensures even brake pad grip and wear on both sides of the rotor
• High-temperature seals, titanium brake pad retainer clips, and stainless-steel brake pad wear plates included as standard

Two-Piece Floating Rotor Design:

• 330mm (13 in.) drilled floating rotor — two-piece construction for lightweight, fade-free performance
• Rotor center section crafted from 6061-T6 aircraft-grade aluminum, reducing rotational mass by up to 50% compared to OEM rotors of the same size
• Outer rotor ring expands and contracts independently from the center section, greatly reducing the risk of heat-induced warping
• Aluminum center sections act as heat sinks, dissipating heat away from the rotor faster for sustained braking performance

DualComp Handbrake System:

• Includes a polished titanium handbrake cylinder and lever for improved feel and precise control
• Handbrake and foot brake circuits run fully independent of one another within the single 4-piston caliper

Complete Bolt-On Kit Includes:

• 4-piston DualComp calipers
• 330mm (13 in.) two-piece drilled floating brake disc
• Performance brake pads
• Polished titanium handbrake cylinder and lever
• CNC-machined carbon steel caliper brackets (for OEM bracket location fitment)
• D.O.T.-compliant stainless-steel braided brake lines
• All required hardware

Key Specifications:

• Rotor Diameter: 330mm / 13 in.
• Rotor Style: Drilled
• Caliper Type: 4-Piston (DualComp)
• Position: Rear
• Minimum Wheel Size: 17 in.
• Application: 2WD vehicles only

Installation is straightforward with minimal tools required and no permanent vehicle modifications needed in most applications. The included CNC-machined carbon steel caliper brackets allow the oversized calipers to mount directly to the factory caliper bracket location. D.O.T.-compliant stainless-steel braided brake lines are included standard.