McMaster Carr is a good source for quality taps in nearly every size. There's nothing "bike specific" about most metric taps. If cost is a concern, Enco, Travers, and many other tool suppliers are probably less expensive than the Park brand, and you can select from high speed steel, cobalt, and coated versions, along with a variety of grinds, including "bottoming" taps, and even a selection of thread engagement levels.

Take a look at "www.use-enco.com".