I can’t deal with all the negativity in the other thread right now, so let’s have a thread of *best* bike improvements.
I’m going to start with direct mount chainrings finally going mainstream.
I had a direct mount chainring on my ancient Middleburn cranks years ago, but it always seemed like if you wanted nice cranks you needed those awful slotted bolt monstrosities. I used to dread switching chainrings over as I knew it would be such a miserable experience, usually involving either an electric drill or a mole wrench.
But Shimano’s latest XT offering now comes with a nice easy-to-use direct mount fitting. Even better the tool you need is a standard BB tool, which I had kicking around already.