GraviTrax Junior: My Trax Extension expands the creative possibilities of any GraviTrax Junior build with an exciting collection of track pieces designed especially for young engineers aged 3 to 7. With 33 additional components—including bridges, slopes, straights, base plates and turns—this extension encourages deeper problem-solving, creativity and hands-on STEM exploration.

• 33 extra building pieces: Includes base plates, height stones, bridges, slopes, curves and straight track elements to build longer and more complex runs.
• Supports early STEM development: Helps children understand gravity, motion, direction and sequencing through interactive play.
• Easy assembly for young builders: Chunky, durable pieces are designed for small hands and support independent building.
• Fully compatible with all GraviTrax Junior sets: An ideal add-on for families looking to expand their child’s marble run world.

The My Trax Extension allows children to lengthen, customise and upgrade their marble run layouts, creating fresh challenges and encouraging experimentation. By adding more track variety, kids can explore new routes and build more dynamic structures, all while developing fine motor skills, spatial awareness and early engineering abilities.

With its sturdy construction and kid-friendly design, this extension pack provides the perfect balance of educational value and fun, making it a fantastic addition to any GraviTrax Junior collection at home or in early learning environments.

Contents:
• 33 GraviTrax Junior track components
• Base plates and height stones
• Slopes, turns, bridges and straight pieces
• Fully compatible with all GraviTrax Junior starter sets

Extend the adventure and spark imaginative STEM learning with this versatile and exciting track-building extension.

Available now from Milsims Games — Australia’s trusted destination for GraviTrax, early learning toys and hands-on educational play for over 50 years.

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