You are reading a single comment by @returnofthestaff and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
returnofthestaff
For the 1x specific derailleurs, the medium cage officially goes up to 36t, I've been running one with an 11-42t cassette though, but that's really stretching it. 40t should be fine.