FREE SHIPPING ON ALL ORDERS OVER $199
The Subaru STI has long been a benchmark for turbocharged performance and all-wheel-drive capability. From daily-driven street setups to dedicated track builds, we carry STI-specific parts selected for proper fitment, durability, and real-world performance.
This page is designed to help STI owners from the start of their journey to get the right parts faster, with confidence.
Vehicle-specific fitment. Proven performance brands. Street & track focused upgrades.
Browse Subaru STI aftermarket parts by system to quickly find the upgrades that match your performance goals.
We work with some of the most respected names in the Subaru aftermarket to offer STI parts that deliver consistent performance under demanding conditions. These brands are known for engineering precision, durability, and proven results.
Our Subaru STI parts selection covers multiple generations and configurations, making it easy to find upgrades tailored to your specific model.
2004–2007 Subaru STI
Early EJ257 platform with strong aftermarket support and classic performance roots.
2008–2014 Subaru STI
Wider-body chassis with expanded suspension and drivetrain upgrade potential.
2015–2021 Subaru STI
Refined EJ257 platform with modern chassis updates and track-ready capability.
Always confirm compatibility based on year and configuration before ordering.
Considering the WRX platform? Browse our Subaru WRX Performance Parts page to explore FA20 and FA24-based upgrades.
Looking to better understand your STI platform or plan your next upgrade? These guides break down common performance questions and build considerations.
A built transmission is one of the most debated upgrades in the Subaru world. Some builds break gearboxes early, while others survive years of hard…
Your clutch is basically the “handshake” between the engine and transmission. When it starts slipping, chattering, or feeling inconsistent, it’s usually not random — it’s…
Achieving a reliable 400whp Subaru STI with the EJ257 engine is one of the most common and proven performance goals in the Subaru community. When…
Essential Insights for WRX & STI Owners If you drive a Subaru WRX or STI, protecting engine health while preserving performance should always be a…
Explore some of the most popular Subaru STI upgrades, selected based on performance demand and enthusiast builds.
Select options
This product has multiple variants. The options may be chosen on the product page
Select options
This product has multiple variants. The options may be chosen on the product page
