The Bison 80 curved stairlift can now be manufactured in a 2 week turnaround period. So if you urgently need a new curved lift then Bison has the quickest delivery times. The only way you can get one faster is to use a company that refabricates old rails. The manufacturers all agree that the refabrication of rails is a dangerous practice. For more details on the curved Bison stairlift click the following link. Bison 80 curved stairlift.