Even a decent FS carbon frame will deflect with a BBSHD. They're just not designed to be strong enough to resist the massive force on the chain.Thank you this was a future project now put on the furthest back burner suspect its the pivot bolts /bearings flexing
Time for a machine shop..ive ordered some alloy plate..see what I can do.Snapped my fs rear bearings in sympathy today and as its a odd rockrider 9.1
View attachment 42399and decathlon no longer stock parts them