I ran out of gears (or legs…) on the weekend and I want more options for when I take the Giant TCX out to climb. I’m running Shimano 105 w/hydro discs - what cassette options do I have (how big can I go on the rear)?
Also I’m running some pretty rubbish came-with-the-bike 33mm tires and I’m thinking I’d like to a different way. Something gravel friendly but that wont mind simple wet commuting on bitumen from time to time, 33mm-35mm? Compass? Any recommendations?