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Technic: WHACK!
Technic: WHACK!

Now watch it come apart, one step at a time.

135 bricks, and every one of them has its place.

Look inside. This is how it was made.

Back to the first bricks. The rest is yours to build.

 

LEGO® Technic

Technic: WHACK!

  • 135pieces
  • Year2018
  • 52steps

Museum mode

In the museum wing

This set has stepped off our shelves, but no one can retire a dream. Turn it around, watch it build, keep it close.

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Still dreamable in 3D

Watch it build itself

Every set tells its story brick by brick. Scroll gently and watch this one rise: no glue, no rush, just pieces finding their place.

  1. The first bricks click into place.
  2. 135 bricks will pass through your hands.
  3. The little details arrive, one by one.
  4. And there it is: the dream, complete.
About this set

A low red streak of a bike, all 135 pieces of it loaded onto a pull-back motor that begs to be let loose. Yank it back, release, and it bolts off with a whir and a wobble and absolutely no plan for stopping. Small, loud, and named for exactly the sound it hopes to make.

The plaque on the wall
Theme
LEGO® Technic
Set number
42072
Pieces
135
Released
2018
Age guide
7+
What's in the box

The complete set, factory-sealed in its original box.

Where it comes from

Nobody we trust has this one in stock right now, so there is nothing to sell you today. It stays on display, and we will tell you if that changes.

Credits & thanks

technicbasics, LDraw Official Model Repository (CC-BY-2.0)

3D model from the LDraw Official Model Repository · set data from Rebrickable.

Dreams alike