Hi Ann, The cranks are Rivendell Silver 173mm triple. I installed a Raceface Narrow Wide 38t 110bcd. The rear is a Shimano 11-42 SLX 10-speed cassette. In order to get the rear derailleur to be able to swing to the 42t I used an 11-speed SLX medium cage rear derailleur. The chain is an E-bike KMC 10-speed 136links. 110mm Shimano BB that came stock from Rivendell. I modded the vintage shifter to swing up to 11-speed.
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