Ksport BKMZ014-435SO DualComp Rear Big Brake Kit Slotted Rotor - 4-Piston 13in

The Ksport BKMZ014-435SO DualComp Big Brake Kit is a complete rear brake upgrade engineered for high-performance driving, drifting, and rally racing applications. This innovative dual-function system integrates both foot brake and handbrake operation into a single compact 4-piston caliper — eliminating the need for a separate handbrake caliper and simplifying the overall brake setup.

The DualComp caliper splits its four pistons between two independent hydraulic circuits: two pistons dedicated to the foot brake and two pistons dedicated to the handbrake, each operating completely independently on its own system. This design delivers precise, consistent braking performance under demanding track conditions while preserving full handbrake functionality for drift and motorsport use. This kit is Formula Drift legal and is designed for use with 17-inch wheels and larger.

Two-Piece Floating Rotor Technology:

• 330mm (13 in.) slotted floating brake disc for fade-free, high-heat performance
• Rotor center section machined from 6061-T6 aircraft-grade aluminum for reduced rotational mass
• Two-piece design allows the outer rotor ring to expand and contract independently, significantly reducing warp risk under heat buildup
• Aluminum center sections act as heat sinks, conducting heat away from the rotor more efficiently than OEM iron hubs
• Rotor weight commonly up to 50% less than OEM rotors of equivalent size

Kit Contents & Hardware:

• 4-Piston DualComp calipers
• Floating brake disc (slotted)
• Performance brake pads
• Polished titanium handbrake cylinder and lever
• CNC-machined carbon steel caliper brackets for OEM bolt location fitment
• DOT-compliant stainless-steel braided brake lines
• All required installation hardware

Specifications:

• Rotor Diameter: 330mm / 13 in.
• Caliper Type: 4-Piston (2 foot brake / 2 handbrake)
• Rotor Style: Slotted, Two-Piece Floating
• Position: Rear
• Minimum Wheel Size: 17 in.

The Ksport DualComp Big Brake Kit is a true bolt-on system requiring minimal tools and no permanent vehicle modifications in most applications, making it an ideal upgrade for performance enthusiasts and competitive motorsport drivers alike.