Gusset: plates included for the outsides of frame tubes to bolster joints. These are generally a lot more commonly seen on off street bikes that need to be sturdier. Seat rails: a metal framework above which saddle covering is stretched. The seat submit attaches on the seat rails by the https://bikeenginekit04680.blogolenta.com/31991481/indicators-on-bike-part-diagram-you-should-know