HO Add-On Set for 74920 delivers enhanced detail and expanded functionality for HO scale railway layouts.
Featuring:
- System Expansion Parts: Designed to extend and enhance the base 74920 model setup for more realistic operation.
- HO Scale Compatibility: Built for 1:87 layouts and standard HO gauge systems.
- Improved Layout Flexibility: Adds extra configuration options for yards, sidings, or station scenes.
- Easy Integration: Matches existing track and accessory systems for smooth installation.
Model Dimensions (Approximate):
- Length: 10–30 cm (depending on configuration)
- Width: 3–6 cm
- Height: 2–5 cm
Technical Specifications:
- Scale: HO (1:87)
- Accessory Type: Track add-on / expansion set
- Material: Injection-moulded plastic
- Power Requirement: None
- Assembly: Ready-to-use
- Paint/Glue: Not required
- Installation: Direct fit to compatible 74920 system and HO track layouts
Perfect for: HO scale railway modellers expanding existing layouts who want more operational variety, improved track design, and greater realism in their railway system.
Why this accessory matters
Expansion sets like this allow you to build beyond a basic layout and create more complex rail operations. You can add sidings, extend routes, and improve traffic flow, making your model railway feel more active and realistic.
How to use it
Attach the add-on components to the compatible 74920 base system or HO track layout. Follow the track alignment points for correct installation. Test all connections before final securing to ensure smooth train movement.
This is a model railway accessory. It is not a toy.

