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Set 42123 McLaren Senna GTR
Technic

LEGO® McLaren Senna GTR

42123 builds the McLaren Senna GTR as a Technic model with working steering and moveable details, without a single minifigure. At 830 pieces, it sits in the mid-size range of the Technic supercar line-up. This page shows the complete parts list with colours before you decide to buy.

Set number
42123
Year
2021
Pieces
830
Minifigures
0
Theme
Technic
Different parts
131
What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 131

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 (14)

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

Description

A Technic model, not a play set

As is typical for Technic, 42123 includes no minifigures and instead focuses on mechanical function: the front wheels steer through a wheel in the cockpit, and body panels such as doors or the bonnet often open. The set is aimed at builders who enjoy the construction process itself and the mechanics recreated from a real car, rather than classic play scenes with figures. Anyone who already owns other Technic vehicles will recognise similar building methods here, just on a more compact scale.

Colour scheme: black, blue and greys

The colour palette of black, blue, light bluish grey and dark bluish grey reflects the sporty, technical look of the real car: blue provides the standout accent colour across the bodywork, while the grey tones and black cover the chassis, wheels and mechanical components. This colour combination is typical for Technic supercars, where the mechanics stay deliberately visible rather than being fully covered by panelling. The result is a look that shows off how the model is actually built.

830 pieces, 131 distinct parts

With 131 distinct parts out of 830 pieces total, many elements such as pins, connectors and axles repeat several times, which is typical for Technic models and keeps the build process structured rather than chaotic. For builders who enjoy assembling mechanical systems, that means plenty of repeating steps that still come together into a complex, moveable finished model. The parts list on this page shows exactly which colours and elements are included, and how often.

Who this model suits

42123 suits anyone after a technical model with genuine function rather than pure display, as well as supercar fans who see the build process itself as part of the appeal. Its compact size compared with larger Technic vehicles also makes it a good entry point into functional models without the time investment of a flagship set. For children mainly after play scenes with figures, this set is a weaker fit than it is for technically minded teenagers and adults.

FAQ

Does the set include minifigures?
No, as is typical for Technic, 42123 doesn't include minifigures - just the vehicle model itself.
Can the model actually be steered?
Yes, the front wheels steer through a working wheel in the cockpit.
How many pieces does the McLaren Senna GTR have?
The model contains 830 pieces with 131 distinct parts.

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