Old 01-19-20, 06:43 AM
  #15  
tomtomtom123
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SPA cycles has 33T inner/middle chainrings that have ramps and pins. I've tried the 46T and it shifts pretty well. I cannot remember whether the thickness was 4mm or 4.5mm.
https://www.spacycles.co.uk/m2b0s210...l-Middle-Inner
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