LEGO Technic 42177 MOC – G-Class Ute Update (December 2025)

Over the past few weeks I’ve been refining my LEGO Technic 42177 G-Class Ute MOC, pushing it even further into the role of a true multi-purpose workhorse. December has brought two major upgrades that significantly improve both the look and the playability of the model: the removal of the tray sides, and the addition of a fully functional rear PTO.

Tray Sides Removed – More Space, More Possibilities

One of the first changes this month was removing the tray sides. It might sound simple, but it dramatically changes what the G-Class Ute can do.

Without the tray sides: Larger attachments can now be mounted without hitting the panels.

Attachment swapping is far easier, no twisting or angling pieces just to make things fit.

The ute has a more realistic utility look, with an open work tray that suits a modular equipment system.

This change alone opened the door to more ambitious rear-mounted tools and accessories… which leads to the biggest upgrade.

Rear PTO Added – A Game-Changing Upgrade

The most significant improvement is the addition of a rear Power Take-Off (PTO), driven by a grey knob on the left side of the vehicle. Turning this knob powers a red rear PTO output ready to drive mechanical attachments.

This feature wasn’t in the original plan. In fact, it was added retrospectively, after the ute had already been heavily modified a few weeks ago, making the process more challenging.

Because so much of the rear section had already been redesigned, several components no longer lined up with where the PTO needed to run. That meant:

- Multiple attempts to align both the input and output shafts

- Reworking bracing and support so the mechanism remained strong

- Adjusting the aesthetics so the PTO didn’t stand out or look bolted-on

It took a lot of trial and error, but the end result is worth every minute spent on it.

The new rear PTO has transformed the model. It turns the G-Class Ute into a proper modular machine, more like a scaled-down Unimog, with the capacity to run mechanical tools straight from the vehicle.

I already have several new PTO-driven attachments planned. Even better, I’m intending to revisit some of my older attachments and redesign them so they can make use of the new PTO connection.

With the tray now fully open and the PTO functional, December’s update sets the stage for a whole new wave of attachments. Expect more detailed designs in the coming months, each taking advantage of this new capability.

The 42177 G-Class Ute continues to evolve, and this update marks one of the most significant improvements so far. More power, better modularity, and increased play value… exactly what a Technic MOC should deliver.