Measurement confirmation needed.

[zeropointbug]

I have the 3s packs, which are made from the same cells... so the width would be the same.

I measured 43mm width, so yes it's correct. But you also have the wires that will come out which adds 3mm hump on the end of the pack.

Make sure you have a strong drivetrain, these things will knock the $hit out of your a$$. Great choice of pack, you won't be disappointed.