GraviTrax - Expansion Hammer
Propel the marble through your run by adding the Hammer. When triggered, the Hammer swings down and strikes the marble, giving it momentum to send it on its way. Including the hammer tile and 6 additional tracks, this accessory must be combined with the GraviTrax Starter Set. GraviTrax is a modular, electronic-free interactive track system where you can design and build your own marble runs. This STEM toy for boys and girls 8 and up, encourages experimenting with gravity, magnetism, and kinetics to propel your marble to the finish. Designed with open play in mind, the concept offers endless possibilities to design a different track every time you play. Expand your builds and add some action with a variety of expansion sets and accessories.
Propel the marble through your run by adding the Hammer. When triggered, the Hammer swings down and strikes the marble, giving it momentum to send it on its way. Including the hammer tile and 6 additional tracks, this accessory must be combined with the GraviTrax Starter Set. GraviTrax is a modular, electronic-free interactive track system where you can design and build your own marble runs. This STEM toy for boys and girls 8 and up, encourages experimenting with gravity, magnetism, and kinetics to propel your marble to the finish. Designed with open play in mind, the concept offers endless possibilities to design a different track every time you play. Expand your builds and add some action with a variety of expansion sets and accessories.
Propel the marble through your run by adding the Hammer. When triggered, the Hammer swings down and strikes the marble, giving it momentum to send it on its way. Including the hammer tile and 6 additional tracks, this accessory must be combined with the GraviTrax Starter Set. GraviTrax is a modular, electronic-free interactive track system where you can design and build your own marble runs. This STEM toy for boys and girls 8 and up, encourages experimenting with gravity, magnetism, and kinetics to propel your marble to the finish. Designed with open play in mind, the concept offers endless possibilities to design a different track every time you play. Expand your builds and add some action with a variety of expansion sets and accessories.
Propel the marble through your run by adding the Hammer. When triggered, the Hammer swings down and strikes the marble, giving it momentum to send it on its way. Including the hammer tile and 6 additional tracks, this accessory must be combined with the GraviTrax Starter Set. GraviTrax is a modular, electronic-free interactive track system where you can design and build your own marble runs. This STEM toy for boys and girls 8 and up, encourages experimenting with gravity, magnetism, and kinetics to propel your marble to the finish. Designed with open play in mind, the concept offers endless possibilities to design a different track every time you play. Expand your builds and add some action with a variety of expansion sets and accessories.
in 36 offers
The lowest price for GraviTrax - Expansion Hammer right now is $14.95 at All 4 Kids, compared across 34 retailers.
The all-time low was $5.00 on 2 Apr 2025 — today's price is 199% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 10 Sept 2026.
Last updated at 10/09/2026 05:45:55
GraviTrax - Action Pack Hammer
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GraviTrax Action Pack Hummer
Delivery between 17–24 Sept $8.50
GraviTrax Action Pack Hummer
30-day returns
GraviTrax - Action Pack Hammer
Delivery between 15–21 Sept $9.95
GraviTrax - Expansion Hammer
Delivery between 12–21 Sept $15.99
Ravensburger- Gravi Trax Hammer
Delivery between 15–24 Sept $9.95
GraviTrax Hammer
GraviTrax - Expansion Hammer
Delivery $15.99
GraviTrax - Expansion Hammer
Delivery $16.99
GraviTrax Action Pack Hammer Marble Run Build/Play Kids/Family STEM Toy 8y+
Free delivery
originally posted on rainbowresource.com
This is a neat little add on that keeps the ball moving along. Great in those places where a slow down can be a challenge.
originally posted on mastermindtoys.com
My grandson loves this toy (and so do his parents!). So glad I decided to get it. And the curtsied service at mastermind was quick and friendly. Thanks for the help.
originally posted on popcultcha.com.au
These looked so awesome, way better than I thought they would look. Got delivered quick and were packed with care. I highly recommend these as a must for any Duck Dodgers/Looney Toons fan to add them to their collection.
GraviTrax - Action Pack Hammer
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
GraviTrax Action Pack Hummer
Delivery between 17–24 Sept $8.50
GraviTrax Action Pack Hummer
30-day returns
GraviTrax - Action Pack Hammer
Delivery between 15–21 Sept $9.95
GraviTrax - Expansion Hammer
Delivery between 12–21 Sept $15.99
This is a neat little add on that keeps the ball moving along. Great in those places where a slow down can be a challenge.
My grandson loves this toy (and so do his parents!). So glad I decided to get it. And the curtsied service at mastermind was quick and friendly. Thanks for the help.
These looked so awesome, way better than I thought they would look. Got delivered quick and were packed with care. I highly recommend these as a must for any Duck Dodgers/Looney Toons fan to add them to their collection.
Excellent--more potential energy to keep the ball rolling! Even comes with a few extra tracks!
My 9 year old son wanted this to go with the gravitrax starter set he got for Xmas. He loves playing with it and was really excited to get the hammer expansion. He seems pleased with it and thinks its a good edition to the starter set. However, I think its very over priced for what it is. It doesn't propel the ball very much either. You get a couple of bits of extra track with it but I think an extra ball would have been good to have too. Overall, son is happy so that's the main thing I suppose!
Kids enjoy the extra boost this hammer gives.
Good for giving the marble a boost that is more gentle than with the canon.
My grandson who is 9 years old was so excited to receive the Gravitrax starter set and the Hammer expansion.
No red ball as shown on the box and very expensive for what you get.Does repel the ball to a certain extent but not very far.Would have been better spending the money on another magnetic cannon in my opinion.
if you like or collect gravitrax, then you will love this. if you don't then you won't!
