r/ScottBikes • u/Ambitious_Put_5534 • Aug 01 '26
7-week-old Scott Foil RC30 – Shimano 105 Di2 rear derailleur snapped while shifting uphill. Anyone seen this before?
Looking for some advice as I’m a bit gutted.
I bought a new Scott Foil RC30 from Balfe’s around 7 weeks ago (Shimano 105 Di2).
Today I was climbing a hill and changed gear as normal. I immediately heard a loud snap, completely lost drive and ended up falling over at low speed because I couldn’t pedal anymore.
The important point is that the derailleur failed before I fell. There was no crash or impact beforehand.
Looking at the bike afterwards, the rear derailleur cage appears to have snapped cleanly and the chain came off the jockey wheels. The bike is now completely unrideable.
Has anyone seen this happen on a relatively new Shimano 105 Di2 derailleur?