What To Look For in Subaru Performance Parts

Every Subaru WRX/STI owner knows there is something special about their car. These vehicles seamlessly combine motorsport roots with a rugged, everyday drivability, offering the ideal platform for customization. Whether you’re chasing sharper performance, head-turning looks, or both, modifying a WRX/STI is the ultimate way to make your car uniquely yours.

But the real challenge is deciding which modifications and parts truly deserve a spot on your build list. With so many options available, it can feel overwhelming to determine what will provide the best balance of quality, performance, and cost.

Drawing inspiration from WRXDaily’s ongoing 2021 WRX build series, we’ll explore what to look for in Subaru performance parts so you can elevate your ride while staying on budget.

Defining Your Build Goals Before Buying Parts

Before ordering parts, get clear on your goals. Ask yourself:

• Do I want a reliable daily driver with a few tasteful mods?
• Am I aiming for a weekend track machine?
• Or do I want something in between, like balanced performance with head-turning style?

Your answers will determine your build path. If you’re thinking of a reliable daily driver, you should start with practical upgrades that improve reliability and driving experience. Think ceramic coating protection, a new infotainment system with Apple CarPlay, and quality wheels for looks and handling.

If you’re looking for a more track-inspired build, focus on performance-first mods. This includes coilovers, exhaust systems, and performance tires.

Take inspiration from our 2021 WRX project, which focuses on creating a fun, stylish, and affordable daily driver. With careful part selection, you can prioritize cost-effective upgrades that deliver noticeable impact without draining the wallet.

Key Subaru Performance Part Categories

There are three core areas to focus on when upgrading your WRX/STI: exterior mods, interior upgrades, and performance parts. Each contributes differently to the personality of your build.

Exterior Mods

The outside of your WRX makes the first impression, so let’s start there. When it comes to Subaru exterior mods, two priorities stand out: style and function. A few common exterior mods include front lips and side skirts, spoilers and wings, LED headlights and fog bezels, aftermarket wheels, and coilovers.

Together, these mods refresh the car’s appearance while boosting performance where it counts. Wheels and coilovers in particular are two of the most impactful changes you can make. These upgrades offer both visual transformation and sharper handling. Meanwhile, aero parts and lighting upgrades allow you to personalize your WRX/STI to make it stand out on the street without sacrificing practicality.

Pro Tip: Consider upgrading the fog light bezels or adding a subtle front lip first. These are inexpensive, bolt-on mods that drastically improve the aggressive, rally-inspired look of a WRX/STI without affecting ride height or requiring suspension changes.

Interior Upgrades

You spend the most time inside your Subaru, so don’t overlook the cabin. Even small upgrades can dramatically improve your daily driving experience. Take a look at some popular interior upgrades:

• Upgraded head unit with Apple CarPlay (e.g. IDoing Head Unit)
• Carbon fiber trim pieces
• Premium floor mats and seat upgrades
• Shift knobs or steering wheels

Interior mods don’t have to be extreme to change or enhance your vehicle. Even small touches, like a modern head unit or a carbon fiber trim piece, can dramatically improve your daily driving experience. These upgrades give your Subaru a clean, personalized feel while keeping it comfortable and functional for everyday use.

Pro Tip: Swap out the stock shift knob and e-brake handle for lightweight aftermarket or short-throw options. These small mods improve shift feel and cabin ergonomics, giving your WRX/STI a sportier, track-ready touch without a full interior overhaul.

Performance & Handling Parts

Performance parts are where WRX/STI owners often get most excited. These upgrades change how the car feels on the road. Consider mods for boosting performance and handling, such as exhaust systems, coilovers or suspension upgrades, high-performance tires, lightweight wheels, and brake upgrades (pads, rotors, or kits).

Together, these modifications elevate your Subaru from capable to confidence-inspiring. Exhaust upgrades deliver the signature Subaru rumble, while suspension and wheel/tire packages transform how the car responds to driver input. Each upgrade plays a role in creating a WRX/STI that feels dialed-in and more enjoyable to drive every day.

Pro Tip: If you’re starting small, prioritize wheels and tires first. They provide the fastest and most noticeable improvement to both driving dynamics and aesthetics.

What Sets Quality Subaru Performance Parts Apart

Not every part you see advertised as a “performance upgrade” is worth your money. Here’s what separates the good from the bad.

Durability and Quality

Stick with reputable brands using quality materials. Knock-offs that appear affordable wear quickly and can even damage other components.

Proper Fitment

Subaru vehicles are engineered with precise tolerances. Generic universal fit parts often don’t install cleanly. Look for Subaru-specific parts for your make and model to avoid headaches.

Brand Reputation

Forums, build videos, and customer reviews are your best friends. Look into the brand you’re purchasing from before you buy. Real-world feedback often tells you more than marketing claims.

Impact Per Dollar

The priciest option isn’t always the best, either. Focus on upgrades that give you the most noticeable return for your budget.

Practical Tips for Subaru Owners Before Buying

If you’re new to modifying or just want to avoid costly mistakes, keep these tips in mind:

• Think in stages: Build step-by-step instead of making impulse buys. A clear roadmap prevents unnecessary costs.
• Test small changes first: For example, install aftermarket wheels before committing to a full-body suspension upgrade. These incremental changes reveal what works best for your build.
• Protect the big picture: Thoughtful part selection protects your Subaru from wasted money and regrets.

Every WRX/STI owner starts with a dream build in mind. From exterior mods to performance upgrades, the right parts transform your car into something unique, reliable, and endlessly fun to drive. By knowing what to look for in Subaru performance parts, you can ensure your build exceeds your expectations.

Follow our ongoing 2021 WRX build series for real-world part installation guides and practical tips. Whether you’re upgrading fog light bezels or dialing in coilovers, you’ll see firsthand how the right parts come together to create a high-performing Subaru.

When you’re ready to shop, explore our online store for a curated selection of upgrades tailored to your WRX/STI. Every modification is a chance to bring your vision to life and craft a car that balances performance and personality.