Ciao from Roberto (Rome, Italy) I own topstone carbon 3 : super gravel bike !!!! . Upgrade done: Specialized Pathfinder 42 mm tyres and fulcrum (Campagnolo) DB 900 wheels . Comfort and speed at the same time ,a Perfect upgrade . I also put a SP12 suntour seatpost shock adsorber. A little bit heavy but you can put a lighter saddle shock absorber like redshift. I don't care about weight of bycicle , in my opinion the frame quality and wheels are the most important things . Topstone carbon is NR 1 . Really a super quality bike.