K4 Supply Company is a supplier of new-old-stock (NOS) and refurbished HO scale model train items and parts based in Dayton, Ohio. Our primary sales channel is the K4 Supply Company store on Bonanzle. We also still have many items left in our eBay store, but we are hoping to gradually transition everything to Bonanzle exclusively. Many of our items have not been available from conventional hobby suppliers in years. Be sure to check us out regularly to see our ever changing inventory of items you can't find anywhere else.
We specialize in Athearn Parts, Mantua Parts, Rivarossi Parts, and detail parts. We also often have freight and passenger cars, buildings and structures, and many other items.
We also have a selection of electronic components and manuals in our stores.
