form what I can glean over at the aventon website, none of your parts are ‘bad’. Sealed bearing hubs, forged crankset, etc. The weinmann front rim is good quality. Not so sure about that typical deep 30mm rear. Very heavy. Upgrading your cog won’t make a difference. Neither will your chain or chainring. If you’re really mashing, A stiffer crank would be a good investment. A better bottom bracket to go with it. But based on what you have, I would recommend you spend your money on a new wheelset. And if you’re really looking for performance upgrade, buy a new set of tires to go with it. Worry about the drivetrain later. Do you have anything specific in mind for a wheelset? Unless you’re actually trying to race on a track/velodrome I would avoid all ‘aero’ rims, unless you can afford a really expensive set like zipp/shimano etc. The lighter your wheelset the bigger your overall performance gain. Avoid wasting money by buying any wheelset solely based on looks/style. If that’s the reason behind your desire for upgrades, you’re wasting your own time and money. If that’s the case, my advice would be to save your money altogether and just keep riding what you’ve got. My bike runs hplusson tb14’s laced 4x to 36h DA 7600’s with Hoshi double butted spokes. Not ‘aero’ but lightweight and very strong. Something along these lines is what I’d recommend, especially for reliability on the street.