The ALPICO Kotsu 20100 series is a vehicle that began operation in 2022.
It was introduced as a modified Tobu Railway 20000 series to replace the conventional 3000 series.
As of 2025, there are four trains in service.
Of these, one train, introduced in March 2025, became the "TOBU x ALPICO collaboration train."
The side features the line color of the original Tobu Railway 20000 series, and the front features dynamic stripes designed by ALPICO Kotsu, as well as a line in the same color as the side stripe on the footrest.
-The train can be motorized to an N scale train and is compatible with TM-06 Motorized Chassis, TT-04R Trailer Conversion Kit, and Tomix 0245 Pantograph.
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