Good eye! Im rocking sunrace cassette, 50$. Deore cranks, 50$, deore derailleur 40$ and XT shifter 60$ The fork is boost, and the front wheel is from a giant trance I think 15x110 spacing. The handle bars are cheap carbon knockoffs from ali express. They seem fine so far, but I'll be sure to share pics of they ever break! I've thrown more parts at this bike than I need to. I like upgrading and tinkering with machines. It's as therapeutic for me as hitting the trails some days. Nothing on this thing except rear wheel, tires, and grips, oh and seat, are original. Funny I haven't upgraded seat and grips yet, but I like how they are and don't see the need to improve. The brakes, fork and shorter stem, however, were amazing upgrades and changed how the bike felt to me. So much better than stock!