Abstract: A system for improving the stability of a trampoline, including a trampoline frame having a sidebar assembly having a top rail and a leg stub disposed parallel to the top rail, wherein the top rail is welded at one or more locations along the parallel traversing portion of the leg stub. Corner members attach adjacent top rails. Leg members attach adjacent leg stubs of adjacent sidebar assemblies. Forces exerted by use of the trampoline are distributed across the several welds along the top rail, rather than at a single butt weld at the leg stub.