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Set 42108 Mobile Crane
Technic

Mobile Crane

Mobile Crane is a 2020 LEGO® Technic set with 1,292 pieces across 145 distinct shapes. It represents a multi-axle crane vehicle of the kind used on construction sites for heavy lifting work. Black, blue, light bluish grey and yellow echo typical construction-vehicle liveries, and the set includes no minifigures.

Set number
42108
Year
2020
Pieces
1,292
Minifigures
0
Theme
Technic
Different parts
145
What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 145

As BrickLink list (XML)

Import on BrickLink: Wanted → Upload, upload the file (or paste its content), pick a Wanted List and add the parts.

Spare parts (12)

These extra parts come with the set in case one gets lost.

Description

Mechanics over minifigures

As is typical for the Technic line, this set skips minifigures entirely and focuses on functional mechanics instead. With 1,292 pieces across 145 shapes, it builds into a crane vehicle where the boom, outriggers and crane arm are designed to move, driven by gears, axles and connector elements rather than simple bricks. The comparatively low shape count against a high piece total is typical of Technic models, since many functional parts such as pins and axles repeat in large numbers. Anyone who already owns other Technic construction vehicles will recognise the line's typical build style of liftarms and connectors straight away.

A real vehicle as the reference

Mobile cranes are used in construction whenever heavy loads need to be lifted precisely across a wide reach, often fitted with extendable outriggers for stability. The LEGO® Technic model translates that working principle into moving assemblies that can be operated manually or, depending on the build, motorised. The black, blue, light bluish grey and yellow colour scheme matches liveries seen on real construction machinery, giving the model a technical, no-nonsense look.

A parts list worth checking

Because Technic sets rely heavily on specialised connector and function parts, the parts list on this page is particularly useful here, for example to identify axles, pins or gears for your own builds. At 1,292 pieces, the set sits in the upper-mid range of the Technic line, offering a longer, more technically demanding build than smaller vehicle models. Builders who like to disassemble and recombine Technic models will also find plenty of axles and connectors here for their own creations.

Who it's for

Mobile Crane suits Technic fans who enjoy mechanical function over figure-driven play scenes, as well as anyone collecting model construction vehicles. It also works as a base for custom modifications or as an addition to other Technic construction-site vehicles, provided the interest lies in realistic vehicle engineering rather than open-ended building.

FAQ

Does the set include any minifigures?
No, as is standard for Technic sets, there are no minifigures; the focus is on vehicle mechanics.
What sets Technic sets apart from classic sets?
Technic sets use axles, gears and connector pins to create moving functions rather than simple stud connections, which also explains the lower shape count despite a high piece total.
What real vehicle does this set represent?
It's modelled on a multi-axle mobile crane of the type used on construction sites for lifting work.

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