Gravitrax Expansion: Tunnels

Availability: In stock

Gravitrax: Tunnels Expansion Pack

GraviTrax is a unique marble-run system featuring hexagonal risers and track tiles that simply fit and stack together, rail-tracks that hook into place, and stunt pieces that add exhilarating twists and turns.

And with this expansion set - full of unique curving tunnels, drop tubes, and more - Those twists and turns become even more exhilarating!

Add the element of surprise to your track! Expand your run while sending marbles through the various tunnels, hiding them from view. Twists and turns add new excitement with this Gravitrax expansion.


  • 8 to Adult


  • 4 x Curved Tunnels
  • 2 x Straight Tunnels
  • 2 x Y Junction Tunnels
  • 2 x Baseplates
  • 1 x U-Turns
  • 2 x Drop Rails
  • 2 x Bent Rails
  • for use with the Gravitrax Starter Set

Product Specifications:

  • 13.4 x 13.4 x 2.4 inches
  • 1.43 pounds
0 stars based on 0 reviews