Ksport BKVW430-435SO DualComp Rear Big Brake Kit 4-Piston 13 in. Slotted Rotors

The Ksport BKVW430-435SO DualComp Big Brake Kit is a complete rear brake upgrade engineered for drivers who demand both foot brake and handbrake performance from a single, unified caliper assembly. Designed with drifting and rally racing in mind, this kit is Formula Drift legal and delivers a dramatic step up from stock braking hardware.

Dual-Function 4-Piston Caliper System:

• Single 4-piston caliper handles both braking circuits — 2 pistons dedicated to the foot brake, 2 pistons dedicated to the handbrake
• Each circuit operates independently on its own hydraulic system for precise, simultaneous control
• Includes a polished titanium handbrake cylinder and lever for improved feel and driving control
• Forged one-piece caliper body machined from aerospace-grade billet aluminum — no weak spots from casting or welding
• Opposed-piston design ensures even pad contact and consistent wear on both sides of the rotor
• Aluminum caliper pistons with high-temperature seals rated for racetrack use
• Titanium brake pad retainer clips and stainless-steel brake pad wear plates included

Two-Piece Floating Rotor Design:

• Rotor diameter: 330mm (13 in.) | Rotor style: Slotted
• Two-piece construction allows the outer ring to expand and contract independently of the center hat, dramatically reducing the risk of heat-induced warping
• Center hat crafted from 6061-T6 aircraft-grade aluminum — commonly up to 50% lighter than OEM rotors of the same diameter
• Aluminum center sections act as heat sinks, channeling heat away from the rotor and into the surrounding air

Complete Bolt-On Kit Includes:

• 4-piston DualComp calipers
• Two-piece slotted floating brake discs
• Performance brake pads
• Polished titanium handbrake cylinder and lever
• CNC-machined carbon steel caliper brackets (for OEM bracket bolt-in fitment)
• D.O.T.-compliant stainless-steel braided brake lines
• All required hardware

Key Specifications:

• Caliper type: 4-Piston
• Position: Rear
• Rotor diameter: 330mm / 13 in.
• Rotor style: Slotted
• Minimum wheel size: 17 inches
• Formula Drift legal

Installation is straightforward — CNC-machined carbon steel brackets allow the oversized Ksport calipers to mount directly to the factory caliper bracket location with minimal modifications required in most applications. Compatible with 17-inch wheels and above.