Does this pipe need welding, or can I clamp it to existing pipe?

This is a finished bend — you'll integrate it into your exhaust system however your setup requires. Most builders either weld or use band clamps at connection points, depending on whether you're building full custom or modifying stock sections.

Will this work with my current exhaust hangers and mounts?

Test-fit is critical. This pipe is bare stainless with no mounting hardware or bracket provisions. Verify clearance and support points before committing to welding or fastening.

Does stainless steel need any surface prep or coating before install?

Stainless arrives ready to use — no painting or priming needed. If you want a polished or coated look, clean it first and apply your choice of finish after fabrication is complete.