Im looking to get faster acceleration on my 450L (2020). I see that clutch kit is an option. Any other good suggestions, and hve anyone tried to install a clutch kit on this model.

I look at something like this:
https://www.youtube.com/watch?v=sQ91Ov1Na1M

Clutch Kits:
https://www.mainstreetcycle.com/shopping/item/453/msc-stage-2-clutch-kit-complete
http://airdamclutches.com/clutches/cfmoto/

Im looking to get faster acceleration on my 450L (2020). I see that clutch kit is an option. Any other good suggestions, and hve anyone tried to install a clutch kit on this model.

I look at something like this:
https://www.youtube.com/watch?v=sQ91Ov1Na1M

Clutch Kits:
https://www.mainstreetcycle.com/shopping/item/453/msc-stage-2-clutch-kit-complete
http://airdamclutches.com/clutches/cfmoto/

I imagine that any clutch kit from MSC would be an improvement over "stock CFM clutch settings".  That said, most of those "kits and videos" appear to be designed for larger/heavier wheels and tires.    Still, there would be a difference on stock wheels and tires.

Perhaps call MSC and talk to them to explain what you "want" to see what they say.  Call Blake and ask him in person.  They do en excellent job of comparing performance against time, so acceleration would be better if I understand correctly.  I have seen their dyno videos and am considering a Stage 2 for a CForce 600.

Offhand, 400 is 400, and is not something larger.

YMMV