Extension Set for Fun Set, includes two freight cars, transformer and track.

Contents: Track to expand the oval of track to include a passing siding, 7 sections of curved track, 5 sections of straight track, 2 turnouts, and 1 feeder track. Instructions for setting up everything and a track plan brochure. Packaging is arranged to hold the 81521 Fun Starter Set with the 81951 extension.

The set can be expanded with the SET sets 8192, 8193, and 8194 and with the entire Z track program.

AJCKIDS exchanges the European speed controller for a real 67271 (120 volt) transformer.