Owen Trailers SpaceMaker Parts SINGLE CYLINDER ROOM EXTENSION – 34.5" STROKE (WITH SYNCHRONIZING CYLINDER) MECHANISMAP24059 AP24058 KIT(Part Page) CYLINDER ASSEMBLYITEM 1 – RAP15224 (34.5" STROKE) REPLACES AP15224 TUBE KITITEM 2 – RAP90480 – REPLACES AP13252