PowerStop K4490-26 Z26 Brake Kit for 08-14 Impreza, 15-17 STI & 20 WRX AWD

Vehicle Fitment

• 2008-2014 Subaru Impreza WRX STI (Hatchback/Sedan; AWD; Front & Rear)
• 2015-2017 Subaru WRX STI (Base/Limited/Sport-tech; AWD; Front & Rear)
• 2020 Subaru WRX (Base/Premium/Limited/Sport-tech; AWD; Front & Rear; models with 4-piston front calipers)
• Fitment confirmed through 2020; 2025 coverage unconfirmed

Features

• Z26 carbon-fiber ceramic brake pads deliver strong stopping power with low dust output
• Cross-drilled & slotted rotors improve heat dissipation and reduce brake fade
• Zinc-plated rotor surfaces resist rust and corrosion for extended service life
• Multi-layer rubberized shims ensure silent, vibration-free braking
• Includes premium stainless-steel hardware and high-temp ceramic lubricant
• Direct bolt-on upgrade - no modifications required for stock calipers
• Matched pad and rotor engineered as part of a system for optimal balance
• Validated for daily-driver use with improved performance over OEM

Specifications

• Axles covered: Front & Rear
• Front rotor diameter: ~326 mm (12.83 in), 5-lug pattern
• Rear rotor diameter: ~316 mm (12.44 in), 5-lug pattern
• Pad material: Carbon-fiber reinforced ceramic (Z26 series)
• Rotor style: Vented cast iron, cross-drilled & slotted, zinc-plated
• Pad shims included; hardware and brake lubricant included
• OEM caliper compatibility confirmed for specified WRX/STI configurations

Included Components

• 2x Front drilled & slotted zinc-plated rotors
• 2x Rear drilled & slotted zinc-plated rotors
• 1x Front Z26 carbon-fiber ceramic pad set
• 1x Rear Z26 carbon-fiber ceramic pad set
• 1x Stainless-steel installation hardware kit (clips, pins)
• 1x Packet of high-temperature ceramic brake lubricant

Product Description

The PowerStop K4490-26 Z26 Evolution Sport Brake Kit is a full front and rear upgrade tailored for Subaru Impreza WRX STI (2008-2014), Subaru WRX STI (2015-2017), and Subaru WRX (2020) models equipped with 4-piston front calipers. It pairs carbon-fiber ceramic Z26 pads with high-performance cross-drilled/slotted, zinc-plated rotors to deliver faster stops, improved heat management, and reduced dust while maintaining quiet, comfortable operation.

Installation is a bolt-on fit with no modifications needed - this kit works seamlessly with factory calipers and brake lines. Stainless-steel hardware and ceramic lubricant are included for professional-grade installation. Designed for daily drivers seeking OEM-quality performance enhancements, this kit is confirmed through model year 2020; compatibility beyond that year remains unverified.