Gusset: plates additional to the outsides of frame tubes to reinforce joints. These are definitely more commonly witnessed on off road bikes that should be sturdier. Hub: the middle part of the wheel which contains bearings and is exactly where the spokes connect and then connect outward into the rim. https://bike-engine-oil71360.bloggip.com/35099655/a-simple-key-for-go-kart-track-near-me-prices-unveiled