Yes and no it is not really compatible...However, the GraviTrax Element* adapter set is available for about 10 CHF and allows you to roll from GraviTrax 8+ to Junior.

No, the GraviTrax Junior parts are not compatible with the classic GraviTrax parts. The GraviTrax Junior sets are specially designed for children aged 3 and over and have a different design and size to the classic GraviTrax parts to ensure safety and ease of use for younger children.