For what it's worth, my FC-6603 46-30 conversion has a big ring without ramps or pins. YMMV I guess.
@Lolo started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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For what it's worth, my FC-6603 46-30 conversion has a big ring without ramps or pins. YMMV I guess.