LEGO Technic 42072 WHACK!

LEGO set 42072 WHACK!, released in 2018 as part of the Technic line, has 135 pieces. Its inventory breaks down into 42 different lots, across 8 colors.

“WHACK!” depicts a small Technic vehicle with an aggressive stunt car style. It is not tied to a separate licence, but sits within the Technic theme, where visible mechanisms, sturdy construction and motion are central to the building experience.

The model is known for its pull back motor, which lets the car be launched across a flat surface. Its bodywork is stylised, while the Technic structure remains visible and clearly part of the design.

This set suits builders who want a small Technic vehicle for active play, simple display or theme collecting. Among Technic sets, it belongs with the compact models that place immediate mechanical action ahead of detailed display accuracy.

Inventory of set 42072

The inventory of set 42072 lists 135 pieces, spare parts excluded: 42 different lots (one shape in one color) for 41 part shapes. The box also contains 5 spare parts, for small elements that are easy to lose.

Colors of set 42072

Main color: black, making up 27% of the parts, followed by dark bluish gray (21%) and blue (19%).

Part types

Most common parts in set 42072

40 of the 41 part shapes in this set have their own page on Setopedia, with their colors, element numbers and the other sets that use them. See all LEGO parts

Exclusive parts in set 42072

One part shape in set 42072 appears in no other set in the catalog, most often a printed element, a sticker or a mold specific to the model. If it gets lost, you will need to look for it individually, for example on BrickLink, rather than in another set.

Rebuilding set 42072 from another set

Share of the parts of set 42072 found in each of these similarly sized sets, counting shape, colour and quantity:

Set 42073 BASH! supplies 76% of them: enough to build a good part of the model before filling in the rest piece by piece.

Size of set 42072 within its line

With 135 pieces, set 42072 ranks #348 out of 443 Technic sets in our database, which have an average of 658 parts. Among the 457 sets released in 2018, it ranks #266. That is less than half the average Technic set size.