Should the chain be outside or inside the cage? Its a Shimano Alivio M3100 : r/bikewrench
Shimano Alivio M3100 Right Shifter Lever With Rear Derailleur Sl+rd 9 Speed Bike Groupset For Mtb Mountain Bike - Buy Shimano Alivio M3100 2x9 Speed Groupset Include Fc-mt101 Crankset And Bb-un100 Cartridge