Paid-up PPA members are eligible for one free road and one free MTB number per year. You can collect either, or both. If you qualify for an upgrade during the year, you are welcome to either exchange the old number for the new one (higher seeding), or you can choose to keep the first number you were issued in the year. It’s up to you to choose.
What if you get a road number, but you decide halfway through the year that you want to do a MTB event, but you don’t have a MTB number (or vice versa)? It’s very easy – you just come to the PPA Office in the week prior to the event, and collect your free number relating to the “other” discipline. You can also collect the ‘other’ number at the first event in that discipline that you participate in.