Never seen the front counter sprocket in alum' and don't think I would try it anyways with the size not being much of a weight saver, but rear sprockets good. I had a vortex and good results.

Vortex 420 CAT5 Aluminum Rear Sprocket Kawasaki Z125 Pro 2017-2025 - Cycle Gear

Chains Really need to go with the more expensive quality chains, or you will be adjusting as much as the stock chain. Here is the go-to in my opinion. Non-O-ring if you are saving weight

15Tcounter sprocket is great for daily commuting, it takes some of the jerkiness away when shifting but the taller gearing will actually slow your top speed and even more so if you go to basic 130/70 rear tire, unless you have the BBK set up.

 

Awesome. Thank you very much!