I replaced the cassette and chain myself 200 miles ago because they were worn and causing shifting issues. I didn't change the chainring at the time because I don't have the tools. I took the bike in recently to have just the chainring changed as it does look very worn but they tell me the...
My local bike shop has quoted several hundred £’s to service my EMTB. Amongst the items they say are “worn out” and need replacing are the chainring, cassette, chain, and jockey wheels. The bike has covered 1200 miles since new but the cassette, chain and jockey wheels were replaced just 200...