Gusset: plates additional to your outsides of frame tubes to strengthen joints. These are generally extra frequently seen on off road bikes that must be sturdier. Seat rails: a metal framework around which saddle covering is stretched. The seat article attaches on the seat rails by way of a clamp https://bikeengine2stroke83754.thelateblog.com/35574867/the-basic-principles-of-go-kart-track