Shimano 105 RD-5701-GS 10-Speed Rear Derailleur | REI Co-op
SHIMANO 105 Short Cage Rear Derailleur 11-speed | SHIMANO BIKE-EU
Shimano 105 rear derailleur failed with a bang in 3 places at same time. Would fitting a new R7000 rear mech work with my 5800 shifters? : r/bikewrench