GraviTrax Expansion Tunnels

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GraviTrax Expansion Set: Tunnels 

Only playable with GraviTrax starter set

Innovative – the GraviTrax interactive track system allows you to design and build your own race tracks and experiment with gravity, magnetism, and kinetics to propel your ball to the finish. 

Clear instructions – comes with clear instructions so that you can start building and playing within minutes. 

Develops critical skills – playing and building with GraviTrax builds spatial reasoning and planning skills, and provides a great stealth learning experience.

Create the element of surprise with the GraviTrax Tunnels Expansion set! Use the tunnels to hide the marbles as they travel through your track. Combine the tunnels with your GraviTrax Starter Set for added mystery to your track. Will you be able to keep your eye on the marble as it rolls through the tunnels? GraviTrax Tunnel extension is a great tunnel system and provides on the ball track for many moments of surprise. Especially if the tunnels are directly connected to the switch therefore spectators can not calculate where the ball will be next. With the tunnel system, the ball track has not only got roofed components for curves and straights, but also branches, two half loops and four new rails

The GraviTrax track system makes experiencing gravity fun! The track can be infinitely extended with various add-ons for endless building and racing enjoyment! 


  • 4 x tunnel curves,
  • 2 x tunnel straight lines,
  • 2 x tunnel switches.
  • 2 x vertical U-turns,
  • 2 x Bernoulli rails,
  • 1 x O-rail upwards,
  • 1 x O-rail downwards
  • 2 x catch baskets

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