In case anyone is wondering, on a Sora 9-speed derailleur, you can fit a 42 tooth sprocket and a 11-42 cassette with no issues. Shown on a 2016 Trek Crossrip Elite. : r/gravelcycling
Shimano Sora Rear Derailleur | Shimano Sora R3000 Groupset - Shimano R3000 2x9v - Aliexpress
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SHIMANOFRONT DERAILLEUR, FD-R3000, SORA, FOR REAR 9- SPEED, - Rider Bicycle
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Shimano SORA rear derailleur adjustment - YouTube
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File:Shimano Sora Rear Derailleur.JPG - Wikimedia Commons
Shimano Sora R3000 and Claris R2000 Front Derailleur Set Up Tips - YouTube
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Shimano Sora and Tourney 2013 – First look - BikeRadar
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Shimano Sora rear derailleur install, U-ring on bolt - Bicycles Stack Exchange
Squeaking Rear Derailleur - Full Shimano Sora R3000 Service. Solved! - YouTube
