I'm a bit confused, the 86BLF series https://www.promoco-motors.com/products/BLDC/86BLF%20Series.pdf

I'm a bit confused, the 86BLF series https://www.promoco-motors.com/products/BLDC/86BLF%20Series.pdf seems to show different specs to that listed in the faqs pages for the DIY motors. The body length is shown in the faqs page for the 86BLF04 as 94mm, but the specs in the promoco data sheet shows the motor body length as 57mm. Is this the wrong data sheet? is there a typo somewhere? Can somebody advise, as I'm trying to model these parts up.
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