Southern Pacific Lines VISION GS-5 #4458 The Southern Pacific wanted to experiment with the addition of roller bearings on a steam locomotive, so the last two GS-4s were selected. Aside from these bearings on all of the axles, the locomotives were identical to the other GS-4s. A series of small dots replaced the stars on the drive wheels to denote the difference. Aside from requiring a little more air when braking and a little more care in making sure they were properly chocked in the roundhouse, crews didn't notice much difference in performance from the GS-4s which were already well regarded for a smooth ride. No additional steam locomotives were ever converted to roller bearings. Lionel has tooled up not one but two sets of proper trailing and tender trucks to bring you accurate models of both GS-5 locomotives! These locomotives also feature whistle steam, cylinder steam and all of the other great VISION effects on another beautiful SP class that has never been offered in 3-Rail O scale before! ElectroCouplers LEGACY Control System Lighting RailSounds Smoke Unit TrainMaster Command Control Wireless Tether Odyssey System II SKU: 2031570 Dimensions: Length: 28" Gauge: O Gauge year: 2020 rail line: Southern Pacific Minimum Radius: O54 Power: Electric Road Number: 4458 Engine: Steam Manuals Find the latest manuals in our support section. Replacement Parts Buy any replacement parts in our support section. Contact Contact a service station to fix your product