I cannot find the dimensions for the nu-8709-st but by the pic's, it looks to be a short filter, the factory is almost 11" long total.
Unifilter actually makes a factory length for the U-force 1000 but only available in Australia from cfmoto.
I tried to purchase it on their website but wont allow me to.
https://shop.cfmoto.com.au/0jya-111130-100-u1000-unifilter-air-cleaner
https://shop.cfmoto.com.au/acc-cfm-u10filterkit-u10-unifilter-kit

Thanks. I'm sure it will. And I do believe we have that info along with some other UniFilters that will fit in our "Information Center".

Going by the information center, the filter listed for the U-Force 1000 (nu-8503-st) only has a 2.375 opening, per the Amazon listing in the 3rd question asked in this link.
https://www.amazon.com/Uni-Filter-NU-8503ST-2-Stage-Air/dp/B000HS6N5G
The correct number that has the 2 1/2" Inlet, should be  NU-8709ST per the Unifilter website.
Not sure what to purchase? Unifilter website has not been updated since 2019 when the U-force 1000 was introduced.

Super ATV directions read not to use RainX on their flip up windshield that I installed on my Uforce 1000. I am curious why, since I have used it for many years on my plastic motorcycle windshields with great success. 

My speedometer is off a solid 10 mph showing fast.
I found this video on how to calibrate rather than purchased larger tires.
https://www.youtube.com/watch?v=RtQEwKCkOlA&t=720s

Thanks!

Where can I aquire a service manual for a 2021 Uforce 1000?
Tried to order one direct but reads out of stock.

This is the one I use;
https://play.google.com/store/apps/details?id=com.binarytoys.speedometer&hl=en_US&gl=US

License plate bracket I purchased came with it's own electrical plugs, so I just removed the factory version.

On my Uforce 1000, 83 mph on speedo, phone app reads 73 mph. Thinking of larger tires will help correct the error.

Thanks

Do you know of a US company that offers tunes for the Uforce 1000?

More info, several models listed;
https://oldskulltuning.com/tunerpro-free-chip-tuning-software/

Anyone use this company or know anything about what they offer?
https://oldskulltuning.com/cf-moto-remap-and-speed-limiter-bosch-me17-8-10/

Do you know of a accessory plug that fits in this? There is currently a blank plug in it to protect the terminals.

Might go to a place like this and see if you can match them up.

https://www.waytekwire.com/products/1598/Connectors/

This company does not recognize the plug type I have a pic of.

Thanks! I did email this company this morning and an employee I know that works there. Still waiting.
https://www.digikey.com/catalog/en
Also emailed cfmoto and nothing.