Brushless Inrunner Motor Mount for R/C Airplanes

Design preview. Rendered from the file, not a photo.

The maker says it fits: Turnigy B2040-4850 brushless motor. See the proof

This model is not currently offered as a verified ready to buy print.

Already have the file?

Upload it and we'll quote your print.

Upload your file

Looking for something like this?

Ask the Solution Counter.

Ask the Solution Counter

What it does

Secure fit holds your motor in place so you can focus on flying, not adjustments.
Works with the Turnigy B2040-4850 and scales to fit other inrunner motors you own.
Pressure-fit design means you skip extra screws, so assembly takes just minutes.
Custom-printed on demand for your exact motor size, saving you money on bulk orders.

Your R/C airplane flies better when the motor sits rock solid. This mount grips your brushless inrunner motor tight, so vibration stays low and power flows straight to the prop.

Made for the Turnigy B2040-4850, this design fits snug in a Zagi Wing frame. The pressure fit alone holds your motor firm, though you can add screws if you want extra lock. Scale it up or down to fit other inrunner motors you run, so one design works across your whole fleet.

We print this mount fresh for you, made from the US. No waiting for stock to ship across the world, no paying for inventory you might not need.

1.4k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What it fits

The maker says it fits: Turnigy B2040-4850 brushless motor

That is the maker's word, not a fit we measured. Check the size below against your own.

Turnigy B2040-4850 brushless motor (model B2040-4850)From the maker's own listing title, checked 2026-08-13. See the original post

Brand names here only say what this part fits. We are not connected to those companies, and they did not make or check this part.

What you get

This design prints as one piece.
Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PLA. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.