Parts4Marx is the exclusive online retailer for The Robert Grossman Co.
We are a small family-run business dedicated to serving the Marx train collecting community. The Robert Grossman Co. is THE major manufacturer of parts to restore and repair Marx trains.

All parts manufactured by The Robert Grossman Co. are made right here in the USA. Most orders can be shipped within 72 hours, but some parts are hand made by train enthusiasts and quantities can be limited. Your order may be delayed 8-10 business days if it includes a hand-built part that’s made to order.

Don’t see it in the catalog? Many parts are available in good, used condition through our Train List. Contact us for availability on specific parts.

For over 30 years, Robert Grossman has passionately supported Marx collectors by manufacturing reproduction parts and servicing salvage parts for Marx trains. The Robert Grossman catalog launched in 1997 and online sales began in 2002. He officially retired in fall of 2022. Parts4Marx is honored to continue his legacy, and that of his predecessor, Paul Gailey.