Do these pipes come with end fittings or couplers?

No—this kit is piping only. You'll need to source or fabricate end fittings, clamps, and couplers separately based on your turbo outlet, intercooler inlet, and any other connection points on your specific setup.

Can I use these straight from the box or do they need prep work?

The red anodized finish is applied at factory and ready to install. If you want to weld sections together or modify routing, sand and degrease the areas you're working on first.

Will these work on my car?

These are 2.50" universal pieces—they fit any intercooler system using 2.50" piping. Verify your turbo outlet and intercooler inlet are 2.50" before ordering. Custom routing and fitment is up to you.