PowerStop KC4603 Z23 Evolution Front Brake Kit w/ Calipers for 2006-2021 Subaru

Vehicle Fitment

• 2006-2014 Subaru B9 Tribeca (all trims)
• 2015-2018 Subaru Legacy (all trims)
• 2015-2019 Subaru Outback (all trims)
• 2015-2021 Subaru WRX (all trims; includes 2020 WRX with 2-piston front calipers)

Features

• Z23 carbon-fiber ceramic brake pads for improved stopping power and reduced dust
• Drilled & slotted front rotors for enhanced heat dissipation and gas/debris evacuation
• Red powder-coated front calipers for corrosion resistance and visual appeal
• Includes premium stainless steel hardware and high-temp brake lubricant
• Direct bolt-on fit for front 5-lug disc brake systems on compatible models
• 2-piston cast iron calipers for strong, consistent clamping force
• Matched pad and rotor design engineered for balanced braking performance
• Designed as a complete front brake system upgrade with pads, rotors, and calipers

Specifications

• Part Number: KC4603
• Location: Front
• Rotor Type: Cross-Drilled & Slotted, Vented
• Rotor Diameter: ~315 mm (12.4 in)
• Pad Material: Z23 Carbon-Fiber Ceramic
• Caliper Type: 2-Piston, cast iron, red powder-coated finish
• Number of Lugs: 5
• Recommended Use: Street performance / daily upgrade

Included Components

• 2x Front drilled & slotted brake rotors
• 1x Front Z23 carbon-fiber ceramic pad set (left/right)
• 2x Front red powder-coated brake calipers
• 1x Set of stainless steel pad shims
• 1x Premium hardware installation kit
• 1x High-temp brake lubricant

Product Description

The PowerStop KC4603 Z23 Evolution Front Brake Kit with Calipers is a complete front brake system upgrade engineered for select Subaru vehicles with 5-lug front disc brakes, including B9 Tribeca (2006-2014), Legacy (2015-2018), Outback (2015-2019), and WRX (2015-2021). This performance kit combines Z23 carbon-fiber ceramic pads with drilled and slotted rotors and red powder-coated front calipers to deliver improved stopping power, enhanced heat management, and reduced brake dust for daily street driving and spirited use. The powder-coated calipers add corrosion resistance and visual style behind your wheels.

Designed as a direct bolt-on replacement with all necessary hardware included, this kit features high-temp brake lubricant and premium stainless steel components for easier installation and long-lasting performance. The drilled and slotted rotor design helps expel gases, dust, and heat from the rotor surface, improving braking consistency and responsiveness. Whether you're refreshing worn braking components or upgrading for better street performance, the KC4603 offers a balanced and reliable front brake solution for compatible Subaru models.