




Replacing ultegra drivetrain, what components do I need?
It's an older bike I got from a marketplace. Shimano ultegra 3x10, on the shifters it says st-6600. Sorry for the bad images, I'm not by the bike now, but I want to get the components today.
The chain is new, we'll around 300km, and I noticed some skipping. Check the images please if I should replace the cassette, chainrings. For the cassette, is the generic 11-28 cassette from decathlon a right replacement for me? And I couldn't find proper chainrings anywhere - if I get a chainring with matching tooth count and 5 screw holes, will it fit, or do I need Shimano ultegra chainrings?
I ride recreationally, so don't need top of the line
Thanks in advance!