I've been to this place once but unfortunately they couldn't service my bike which has an internal hub. However, they were nice enough to recommend the bike shop a block away which did. Also they are located at the back of Small Block(smallblockcafe.com.au) which is a great breakfast/lunch place. There are a multitude of Pokestops surrounding the shop if you need something to do while waiting.
130 Lygon Str, Brunswick East, Vic