Will this filter fit my stock air box without any modifications?

Yes. This is a direct replacement designed to mount in the factory air box — no cutting, adapting, or bracket work required.

Do I need to clean or service this filter before first use?

No. Install it straight from the box. After 15,000–20,000 miles, you can clean it with compressed air and reuse it instead of buying a new one.

What's the actual performance gain compared to the stock filter?

The synthetic media flows more air than paper, so you'll see slightly improved throttle response and cleaner intake. Real-world gains depend on your tune and driving style — not a dramatic power bump, but a solid foundational upgrade.