Sector 9 Longboards is based in San Diego, CA. Sector 9 Longboards has provided you with quality longboard products since 1993. We have the best prices on the web for Sector 9 longboard decks and the widest variety of choices to choose from. Sector Nine longboards is manufactured in San Diego California. Sector 9 decks are all about flex. They make the most flexy boards available. A sector 9 longboard feels kind of like a surfboard. A sector 9 longboard is great for just cruising.