Naturally Aspirated Subaru Performance

Here at NAS Performance, we specialize in NA Subaru Racing engines, mostly for NA4WD and track cars. We also do custom Subaru engine builds of any kind.

Why Choose NAS for Your Engine Build?

When you choose NAS, you’re working directly with Brandon — the owner, the builder, and the person who has grown NAS from the ground up. Every engine is personally specced, assembled, inspected, and packaged by the same person whose name and reputation are on the line.

Every custom part is designed in-house. Every decision is made with intention. Every customer interaction — from the first message to delivery day — comes straight from the owner. If you’re a paying customer and you text me at 8am on a Saturday with a question, I respond as soon as I see it. That level of support is almost unheard of today.

NAS exists because I genuinely love building niche, wild Subaru engines — and I take pride in doing it right, every single time.