BJR Aluminum Transition Cones are ready to ship, we can make 2.5"-5", 2mm thickness, and 100mm length, 6061 aluminum and 304 stainless steel two types.

Conical transitions are smooth and true cones that offer optimal exhaust flow and over large transition range. Step-Up transitions are a great transition for someone who is not looking for as large of a transition range. Slip Fit transitions are the easiest to fabricate with since they allow you to lapjoint your welds.