Born as MM-2 in the early 1900s, 12 of these articulated Mallets were upgraded with superheaters and Worthington feed water heaters and a 4 wheel pilot truck in1936. These 4-6-6-2s were reclassified as AM-2s, they were then converted from compound to simple mallets, by replacing the rear cylinders with smaller ones, and packing the forward cylinders to have the same internal chamber size.  Sunset Models is proud to announce a very collectible (Less than 50 of each cab number) and super detailed version of the SP AM-2. If you are into SP, you can’t miss this! Available in pre Southern Pacific Lines and Post War "Southern Pacific" lettering!
 
Features Include:

• Huge Pittman 9000 series motor
• EOB cruise
• Quiet drive mechanism
• Ball bearing supported gearboxes
• O54 or larger track operation
• TAS turbo smoke
• 2/4 chuff selectable
• RS4.0 articulated
• Directional lighting
• Lighted cab interior and number boards
• Operating hatches, doors and vent