- KIHA52 is a powerful variant of the standard KIHA20 diesel railcar, equipped with two engines and introduced in 1958. While based on the KIHA20 design, the body was extended to a total length of 21.3 m to accommodate the second engine, and it has one additional two-tier window section between the passenger doors compared with the KIHA20. It served local lines nationwide for regional transport and was especially used on routes with steep gradients. After the transition to JR, the type continued in service with various operators but was gradually retired as successor models replaced it.
- Model reproduces vehicles built by Niigata Iron Works from October 1965 through August 1966, recreating the JNR era appearance.
- Standard livery: units assigned to Yonago Locomotive Depot before 1978.
- Side window sashes are finished in silver; H-type rubber seals around door windows are rendered in gray.
- Front end on the toilet side fitted with a gangway bellows.
- Equipped with a GM-5 motor drive unit for stable running.
- Head and tail lights illuminate with warm white LEDs and include an off switch.
- Fitted with Arnold couplers.
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