Originally Posted by HillRider

Just "force" the 130 mm hub into the 126 mm dropouts. It isn't that difficult and won't damage the frame.

Assuming your hub is an 8/9/10-speed freehub, respacing the hub to 126 mm will require redishing and leave you with a weaker, less stable wheel and I wouldn't do it. The reason manufacturer's went to 130 mm hubs when wider 8/9/10-speed cassettes replaced 6/7-speed freewheels and cassettes was to prevent excess dish.