Do I need any extra hardware or clamps to install these?

Hardware required to clamp these bars to your factory roof rails is not confirmed with this listing. Verify your vehicle's roof rail system before checkout, or consult your owner's manual for the correct attachment hardware.

Can I use this with a roof basket or cargo box?

Yes. These crossbars are designed as a foundation for roof-mounted accessories like baskets, cargo boxes, and kayak carriers that use standard rail-mount clamps.

Will these crossbars need finishing or sealing before installation?

Aluminum resists corrosion naturally, so paint or sealant is not required. If you prefer a finished appearance or want added protection in harsh climates, light surface prep and touch-up paint can be applied before install, but it's not mandatory.