Modified C-hubs with holes for mounting graphite body upstop with height adjustable destination to handle when the body details the graphite stops. The C-hubs work big spaces for faster & easier assembly/disassembly of ECS. The entire ECS installation can be merely inserted/removed through C-hub without necessity for disassembly. The big areas prevent collision of ECS with C-hub in serious crashes. Caster pre-set at 4. moderate rigidity for carpeting competition. Usage with matching left-side C-hub #302364-M.