More Cooling. More Confidence. More 50 State Legal Performance.
The list keeps growing.
We're proud to announce that GrimmSpeed Top Mount Intercoolers have officially received two CARB Executive Orders, making them 50 State Legal for approved applications under EO #D-896-4 and E0 #D-896-2. This is another major milestone in our ongoing commitment to delivering performance products that drivers across the country can install and enjoy with confidence.
For years, GrimmSpeed has focused on building parts that deliver real performance through thoughtful engineering, quality manufacturing, and proven testing. Now, more of those products can be legally driven on public roads in all 50 states, including California.
What's Covered?
Whether you're refreshing an older chassis or building a brand-new VB WRX, these intercoolers are now backed by compliance while continuing to provide the cooling performance GrimmSpeed is known for. The product family spans multiple generations of Subaru platforms.
The following GrimmSpeed Top Mount Intercoolers are now covered under CARB EO #D-896-4:
- 2002–2014 Subaru Impreza WRX — 2.0L Turbo
- 2004–2021 Subaru WRX STI / Impreza WRX STI — 2.5L Turbo
- 2004–2008 Subaru Forester 2.5XT — 2.5L Turbo
- 2005–2009 Subaru Legacy 2.5GT — 2.5L Turbo
- 2005–2009 Subaru Outback 2.5XT — 2.5L Turbo
- 2008–2009 Subaru Legacy 2.5GT Spec B — 2.5L Turbo
- 2018 Subaru WRX STI Type RA — 2.5L Turbo
- 2019 Subaru S209 — 2.5L Turbo
- 2015–2021 Subaru WRX — 2.0L Turbo
The following GrimmSpeed Top Mount Intercoolers are now covered under CARB EO #D-896-2:
- 2019–2022 Subaru Ascent — 2.4L Turbo
- 2020–2025 Subaru Legacy — 2.4L Turbo
- 2020–2025 Subaru Outback — 2.4L Turbo
- 2022–2025 Subaru WRX — 2.4L Turbo
Why CARB Certification Matters
A CARB Executive Order isn't simply another badge to put on a product page.
It represents extensive testing and validation to ensure a product meets nation-wide emissions requirements while maintaining the performance drivers expect. For enthusiasts in California, it means these intercoolers can be installed and driven legally on public roads. For everyone else, it's another layer of confidence that the products have been carefully engineered so that performance and compliance don't have to be mutually exclusive.
Part of a Bigger Mission
This approval is another step forward in a mission we've been working toward for years.
As GrimmSpeed continues expanding its portfolio of CARB-certified products, our goal remains the same: give Subaru drivers more opportunities to modify their vehicles without compromising legality, reliability, or performance.
Every new Executive Order represents countless hours of engineering, testing, documentation, and collaboration. It's not the fastest path, but it's the right one, and it's one we're committed to continuing.
Our recent approvals for Subaru headers marked an important milestone. Now, with our Top Mount Intercoolers joining that growing list, we're giving even more drivers access to the GrimmSpeed products they know and trust.
And we're not stopping here.
More products are currently moving through the certification process, and we'll continue working to bring 50 State Legal performance to even more Subaru platforms in the future.
The Future Looks Cool
This is another win for Subaru enthusiasts, another win for responsible performance, and another milestone in GrimmSpeed's commitment to building products that can be enjoyed by more drivers than ever before.
