Ainokaze Toyama Railway <Kurikara (Toyama Prefecture) ~ Ichiburi (Niigata Prefecture)> 521 series secondary cars were transferred from JR West Japan and are currently active. Refreshing light blue and green wave patterns with the motif of the wind are drawn on each side of the car body, and the impression is different depending on the viewing direction.
- Stable running is possible by adopting a power unit with a flywheel. Equipped with traction tires
- Headlight/taillight lighting (with off switch). Uses white LED
- DCC friendly
- Compatible with interior lighting kit Kato 11-211 (Kato 11-212)