PowerStop Brake Pad Set

2011–2025 Subaru Impreza / WRX / STI 2.0L Turbo / 2.5L Engine

Part #: PSA-R21

Overview

The PowerStop PSA-R21 Brake Pad Set is engineered for high-performance driving, specifically designed for serious track day enthusiasts and competitive racers. If you demand the utmost in braking power, fade resistance, and durability during intense track sessions or racing events, this set is tailored to meet those needs. Whether you're pushing your vehicle on the race track or participating in a spec racing series like Spec Miata, these brake pads deliver exceptional stopping performance under demanding conditions.

Constructed with advanced materials and precision engineering, the PSA-R21 pads help you achieve consistent, fade-free braking, giving you confidence and control when it matters most. Designed for experienced drivers who want to maximize their vehicle's braking capabilities, these pads are an excellent upgrade from standard street pads, offering race-level performance for your Subaru or similar performance vehicle.

Key Features

The PowerStop PSA-R21 brake pads incorporate several innovative features to enhance your track experience:

• Designed specifically for track day use with R-Compound tires, ensuring optimal performance during high-speed braking and repeated stops.
• Constructed from a high-friction, race-grade compound that provides superior stopping power and fade resistance compared to OEM pads.
• Optimized for use in spec racing series such as Spec Miata, offering consistent performance across multiple laps and sessions.
• Manufactured with billet and forged components for enhanced strength and durability under extreme conditions.
• Engineered to work seamlessly with high-performance brake rotors, maximizing heat dissipation and minimizing brake fade.
• Suitable for advanced track day enthusiasts seeking a reliable, high-performance brake solution.
• Designed to be compatible with factory calipers and mounting hardware, ensuring straightforward installation.
• Offers improved pedal feel and modulation, giving you precise control during aggressive braking.
• Meets or exceeds the demands of competitive racing, making it an ideal choice for serious motorsport applications.

Construction & Design

The PSA-R21 brake pads feature a billet and forged construction, ensuring maximum strength and resistance to deformation during high-heat conditions. The high-performance friction material is formulated for aggressive track use, providing excellent bite and consistent performance lap after lap. The pads are designed with a narrow profile to fit a variety of high-performance brake calipers, and their advanced compound helps reduce brake dust and noise, even during extended track sessions. The meticulous engineering and quality manufacturing processes ensure a reliable, long-lasting product that can withstand the rigors of competitive racing and spirited driving.

Performance & Sound

These brake pads are engineered to deliver exceptional stopping power with minimal fade, even under the intense heat generated during track days. Drivers will notice a significant improvement in pedal feel and braking response, allowing for more confident and precise deceleration. The high-friction compound ensures rapid heat dissipation, reducing the risk of brake fade and maintaining consistent performance throughout demanding sessions. While designed primarily for performance, these pads also operate quietly and produce less dust compared to traditional racing pads, helping keep your wheels cleaner after each session.

Installation & Fitment

The PowerStop PSA-R21 brake pads are designed as direct replacement for compatible calipers on Subaru models and other vehicles with similar specifications. Installation is straightforward, utilizing existing mounting points and hardware. No special modifications, cutting, or tuning are required, making this an accessible upgrade for experienced enthusiasts and professional mechanics alike. For optimal results, it is recommended to bed-in the pads properly following installation to maximize their performance and lifespan.

• Easy bolt-on installation with factory calipers and hardware
• No cutting, drilling, or special tuning required

What's Included

• Complete set of high-performance brake pads for front and rear wheels
• Installation hardware and instructions

Ideal For

• Track day enthusiasts seeking maximum braking performance
• Participants in spec racing series such as Spec Miata
• Drivers pushing their vehicle to the limit during spirited driving or racing
• Performance-oriented Subaru owners and racers

Emissions Note

This product is designed for racing and high-performance use. It is not CARB-compliant and is intended for off-road or track use only. Please check local regulations before installation on street-driven vehicles.