Zenoah 5792-44901 Watercooled Stroker Crankshaft 29mm (+1mm)。Stallion ST-142 Crankshaft Front Seal Wear Ring Installer。Cranked chain link type 12 / L for roller chain company。。専用になりますよろしくお願いします。DART LS FULLY COUNTERWEIGHTED CRANKSHAFT – Full Throttle Speed。