HOLYMOD
American Truck Simulator Trucks Free

Duckworth (The0neNd0nlyDuck): giant RV-style Kenworth W900 for American Truck Simulator

A huge Kenworth W900 inspired by luxury RV sleeper trucks: 6x4 to 12x12 chassis with rear steering, a “luxury RV” interior and lots of accessories. 2.3 GB, updated October 25, 2026.

Author: The0neNd0nlyDuck Version: Versión del 25-10-2026 Compatible: The author does not state an ATS version (updated Oct 25, 2026) 4.0 (60) Updated: 25 Oct 2026 Reviewed: 10 Nov 2026
Download Duckworth (The0neNd0nlyDuck): giant RV-style Kenworth W900
Duckworth (The0neNd0nlyDuck): giant RV-style Kenworth W900 for American Truck Simulator
© The0neNd0nlyDuck on Steam Workshop
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Official screenshots by the author: © The0neNd0nlyDuck on Steam WorkshopMore screenshots on Steam Workshop ↗

What this mod does

Duckworth is a long-nose, oversized Kenworth W900 inspired by the luxury RV sleeper trucks seen in the United States, but with a fifth wheel so it still pulls trailers. It is The0neNd0nlyDuck’s first mod and, in his own words, meant for long hauls rather than city driving.

What it includes

  • 6×4, 8×6, 10×10 and 12×12 chassis, each fixed or with rear steering (the 12×12 with twin steer).
  • Two interiors: original and luxury RV.
  • Many exterior options: square or cylinder fuel tanks, lights and chassis accessories; classic placeholder paint jobs included and a skin template “coming soon”.
  • Compatible, according to the author, with the Kenworth tuning DLC, Slav Jerry’s engine pack, the Sisl mega pack, Haterbilt lighting and Pizzster’s smoke plugin, among others.

Details and version

It was released on October 17, 2026 and updated on October 25, 2026 (17 change notes). It weighs 2.27 GB and has about 2,600 subscribers with 4 stars (60 ratings). The author does not state the ATS version.

Keep in mind

It is a very heavy mod still in development: the comments report crashes, sound (FMOD) and localization errors and a flickering panel. The author asks for game.log and crash.log files in his discussion thread.

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User rating

4.0 / 5
60 ratings in total 4.0 / 5 · 60 on Steam Workshop
Tried it? Rate it: Anonymous, one vote per person.

Highlights and things to keep in mind

Highlights
  • Chassis up to 12x12 with rear steering
  • Luxury RV interior
  • Updated in October 2026
Keep in mind
  • Very heavy: 2.27 GB
  • In development: crashes and sound errors reported
  • The author does not state an ATS version
  • Unofficial mod: brands belong to their owners; neither Holymod nor the author is affiliated with them

Requirements

  • American Truck Simulator
  • About 2.3 GB free
  • Steam account to subscribe on the Workshop

How to install it

  1. Open the mod page on Steam Workshop and click “Subscribe”.
  2. Start ATS and enable “Duckworth” in the Mod Manager.
  3. Look for it at the Kenworth dealer or the mod dealer.
  4. Pick chassis, interior and accessories in the workshop; if it fails, send your game.log to the author's thread.

Version history

  1. Version of Oct 25, 202625 Oct 2026Current

    Latest update (17 change notes)

  2. Initial version17 Oct 2026

    Mod released

Common problems

Which chassis does it have?

6x4, 8x6, 10x10 and 12x12, fixed or with rear steering.

Which version is it for?

The author does not say; updated Oct 25, 2026.

How big is it?

2.27 GB.

Is it stable?

It is in development: comments report crashes and sound errors; the author keeps fixing them.

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