Vibrant 4" T304 Stainless Steel U-j Mandrel Bent Tubing Universal 2613 Vibrant 4" T304 Stainless Steel U-j Mandrel Bent Tubing Universal 2613 Ships to Continental US Only. The Vibrant 2613 4" T304 Stainless Steel U-J Mandrel Bent Tubing is the perfect option for building your custom exhaust system, downpipe, intake... MSRP: Was: Now: $214.99 Out of stock. Please Call For Availability