How much oil does my 2021 CBR1000RR need specifically with oil filter change?

it says 2.9 qt after draining and oil filter replacement. And 3.6 qt after “disassembly”

So for an oil change with new oil filter, is it 2.9 or 3.6? What does disassembly mean exactly?

 

It will be approx 2.9 qt for a normal oil change. There is always residual oil in the engine during a normal oil change.
The disassembly figure is for a completely dry engine, either brand new or fully taken apart (disassembled)

 

If you want to be extra, super sure you could start with 2.9, let it idle for a few minutes and then check the level after letting it sit for 10-15 minutes. I'd rather run with a little extra rather than not enough...

 

I have 3.4 liters according to the manual at the service at TO1000 - brought 4 liters changed the filter and filled in 3 liters of oil and it was normal. In fact, the engine is written 3 liters, I also use the best oil additive for burning oil https://davesoilchange.com/oil-addit...r-burning-oil/ ,and the engine's performance becomes much more efficient. I have an intruder. Look at what is written on the cover itself, next to the viewing window. The filter will generally take over 100-150 grams. Change the filter, fill in 3 liters, warm up the engine a bit and look at the quality. In principle, I do not think that the level is below normal.

 

Just buy 4 quarts, that is the common sales package.
Most bikes use a bit of oil, so some spare might come in handy.
Just realize one thing: would you rather order twice because you have a bit short just because you theoretically could save 10 bucks?