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Ksport BKMZ320-435CO DualComp Rear 4-Piston Big Brake Kit 330mm Cross-Drilled Rotors Orange Calipers

(2014-2016 Mazda 3)

Manufacturer

Picture for manufacturer Ksport

Part Number

BKMZ320-435CO
8 reviews
Sale Price

$3,785.51

Estimated ship date Saturday, November 21

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Product Details

The Ksport BKMZ320-435CO DualComp Big Brake Kit is a complete rear brake upgrade engineered for drivers who demand serious stopping power on the street and track. Designed with drifting and rally racing in mind, this kit delivers a dual-function braking solution in a single, compact 4-piston caliper package.

Innovative DualComp Caliper Design:

  • Single 4-piston caliper with dedicated dual functionality — 2 pistons operate the foot brake and 2 pistons operate the handbrake
  • Each braking circuit runs independently on its own hydraulic system for precise, isolated control
  • Formula Drift legal configuration — tested and proven on rally racing and drift circuits

Two-Piece Floating Rotor System:

  • 330mm (13 in.) cross-drilled rotors with a two-piece floating design for superior heat management
  • Rotor width: 32mm
  • Lightweight 6061-T6 aircraft-grade aluminum center bells reduce rotational mass for faster, more responsive braking
  • Two-piece construction allows the outer rotor ring to expand and contract independently, dramatically reducing the risk of warping under thermal stress
  • Rotors commonly weigh up to 50% less than OEM rotors of the same size
  • Cross-drilled rotor style recommended for street and daily-driven applications for optimal cooling

Hardware & Components Included:

  • Rear 4-piston calipers (Orange finish)
  • Two-piece floating cross-drilled brake discs
  • CNC machined carbon steel caliper brackets for direct bolt-on fitment to OEM caliper bracket location
  • SC1 street brake pads
  • Polished titanium handbrake cylinder and lever for improved feel and driver control
  • D.O.T.-compliant stainless-steel braided brake lines for firm pedal feel and reduced line expansion under pressure
  • All required mounting hardware

Specifications:

  • Position: Rear
  • Caliper Type: 4-Piston (DualComp)
  • Rotor Diameter: 330mm / 13 in.
  • Rotor Width: 32mm
  • Rotor Style: Cross-Drilled
  • Caliper Color: Orange
  • Minimum Wheel Size: 17 inches

The DualComp system installs with minimal tools and requires no vehicle modifications in most applications. Note: The OEM handbrake will not function after installation. Compatible with 2WD vehicles only.

Products specifications

Fits

2014-2016 Mazda 3

Easily searched to look at parts for specific car very competitive pricing

Best price I could find on Autolite HTO plugs highly recommended

Thanks

East shopping experience

Thank you!

Super fast shipping, good tire. Will order again.

It was good and my part arrived as promised

Overall experience was ok. Got my items at a very great price. Cheapest I found online BUT the shipping was a slight nightmare. Had to call multiple times and items finally got to me but other than I am pleased. I ordered a few days before black Friday/cyber Monday deals so that could've been the problem too. In the end I got what I wanted at the best price!

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