Ksport BKVW052-434CO DualComp Rear 4-Piston Big Brake Kit with 13 in. Drilled Rotors

The Ksport DualComp Big Brake Kit is a purpose-built, all-in-one dual-function braking solution engineered for performance driving disciplines including drifting and rally racing. At the heart of the system is a single 4-piston caliper with a split-function design: two pistons dedicated to the foot brake and two pistons dedicated to the handbrake, each operating independently on its own hydraulic circuit. The result is precise, separate control over service braking and handbrake operation from a single, compact caliper assembly.

Two-Piece Floating Rotor Design:

Every DualComp kit features a lightweight two-piece floating brake disc. The outer iron ring is paired with a center bell machined from 6061-T6 aircraft-grade aluminum, which can weigh up to 50% less than a comparable OEM one-piece rotor. The floating design allows the outer rotor ring to expand and contract independently of the center section, significantly reducing the risk of heat-induced warping. The aluminum center bell also acts as a heat sink, drawing thermal energy away from the braking surface and dissipating it more efficiently than steel alone.

Key Features:

• Dual-function 4-piston caliper — 2 pistons for foot brake, 2 pistons for handbrake, each on independent hydraulic circuits
• 13 in. (330 mm) cross-drilled floating rotor — reduces unsprung rotational mass for quicker brake response
• 6061-T6 aircraft-grade aluminum rotor center bell — lightweight heat-sink construction
• Polished titanium handbrake cylinder and lever — enhances both feel and driving precision
• CNC-machined carbon steel caliper brackets — bolt directly to OEM caliper bracket locations, no chassis modifications required
• D.O.T.-compliant stainless-steel braided brake lines — included as standard
• Formula Drift legal — tested and proven on professional drift and rally circuits
• Complete bolt-on kit — includes calipers, floating brake disc, brake pads, handbrake hardware, and all required installation hardware

Rotor Style Note: Cross-drilled rotors run cooler than slotted rotors and are recommended for street and mixed-use applications. This kit is suited for use with 17-inch wheels and larger. Note that the OEM handbrake will not function with this system installed — the DualComp handbrake mechanism replaces it entirely.

The Ksport DualComp Big Brake Kit includes a 12-month warranty covering manufacturer defects. Kits are built to order.