Hard to see the effect compared to OEM.
I have a yzf R25 '19 and this is what I think of it.
I was confused with DAYTONA's repeatable Air Filter, but since the performance seemed good, I bought this one.
Filter oil is included from the start, so changing the oil is not particularly difficult and can be done quickly. However, because I didn't know exactly how much grease I should apply, I called the shop and asked about it. "Not too much, not too little. The answer was "yes". I put it on somehow, but I am not sure if it is effective.
I'm not sure how long it will take as I've never cleaned it, but from the description it looks easy as all you have to do is dissolve detergent in water, lightly wash, dry and then apply Oil.
The dramatic change was not felt personally. However, the AfterFirea increased very much because I had changed to the Exhaust System with good Slip-on Silencer release right after I changed. Is it the cause that the intake air increased? I was a little worried, but it was fixed naturally when I was running.
As mentioned above, you won't see any dramatic changes, but if you want to reduce maintenance costs and get the self-satisfaction of customizing what you can't see, this is the way to go.

