1/18 work trailer, for trx4m

TRX4M Work Trailer 

This printable TRX4M work trailer is a detailed and functional scale accessory designed for TRX4M rigs. The model features a rugged dual-axle setup and realistic body lines, perfect for hauling gear or completing your scale RC build.

Build Details

The trailer is assembled using approximately 30 M2 bolts of various lengths (M2 x 4 mm to M2 x 12 mm), along with 4 M3 x 35 mm bolts and 4 M3 nuts for the main structural connections.

You’ll also need four TRX4M wheels — the stock ones work great if you have spares on hand.

For the door flaps and roof hinge, small sections of cut-up paperclips are used as hinge pins, offering a simple and durable way to keep the doors functional.

Printing Information

• Total parts: 16 printed pieces (including the wheel spacer hexes)
• Recommended material: PLA or PETG for durability
• Assembly: Bolt-together design with minimal post-processing
• Functional details: Dual side-opening doors with roof connection, scale chassis with hitch point

This model combines functionality and realism, making it a great addition to your TRX4M setup for display or trail runs.

This is the hitch I use, Trailer Hitch by Snot LeBotBot designed to attach directly to the stock rear bumper.

The trailer model is not currently compatible with the A1 Mini, but compatibility may be added in the future.

I’m also working on interior storage racks, which will be able to slide right in if you’ve already printed the model.

Your feedback is greatly appreciated, as this is one of the most complex models I’ve created so far!