1260 Air Filter

Stock is best and this comes from David Lillard President of Rexxer USA.
After that, Sprint Filters are the goto in the aftermarket realm. These don't require any oil.
Sprint Air Filter

Here's a video of Brock Davidson about the racing version of a Sprint air filter but pay attention to what he says about the stock air filter.


Check-out what he says at 14:20

 

Personally, when my filter is up for change it will be a K&N panel filter I replace it with. Its a pig of a job and I only want to do it once

 

I think you should avoid anything from K&N. Might as well have no filter at all.
If you are going to buy a higher flow air filter, at least install one that actually filters such as Sprint which also does not require any oil.
Please view the above videos by one of the best tuners in the business. He also discuses air filters that require oiling.
After that, check this out then decide:
Air Filter Test

 

Well, with the greatest respect I have run K&N panel and pod filters for many years in my GSXR's, Triumph Daytona and Street Trips, ZX10R, ZZR's, ZRX1200 as well as several cars and never ever had any issue of any kind.
Cheap pattern filters, yeah - they are often poor and can restrict airflow. On K&N's - sorry I cannot agree with those findings. My experience proves the opposite

 

Blow it out with compressed air from the clean side, re-install. Bike will run exactly the same as if you installed the "highest performance" filter on the market. Probably not what anyone wants to hear though

 

K&N filters have been a goto for years and with good reason, as have other oiled filters but now things have moved on a little and, like cars have done for a while now, bikes are starting to use sensors upstream of the throttles. MAP sensors, intake temp sensors, pressure sensors etc. and the oiled filters can cause issues with these. The oil, no matter how much any excess is removed from them, gets drawn into the intake charge. This deposits on the sensors and over time can either cause mis reads or failure.
OEM filters are much better nowadays and dry, as are Sprint filters. If you are going to go after market, choose the filter based on your induction type. Older bikes are fine on oiled filters, but over time, you’ll begin to cause errors or failures in your injection system on the newer bikes. Rule of thumb, if the bike is Euro 3 or newer, go dry filter.

 

Very informative: That explains why I saw no issues before but maybe some Euro 4's could - thanks

 

I completely agree with TaskMule, blow oem filter from clean side with compressed air, job done. Just done the cleaner on my gen 1 Mutt, ball ache of a job mind

 

The technology of a certain air filter manufacturer who shall not be named has been superseded more than twenty years ago. Today, many of the top brands offer different models to choose from depending on the applications. Sprint for example, offers four models for the Multistrada.
P08 for general street use and occasional track days
P16 Custom (210% Increased Surface Area) for racing
P08-F1 primarily for racing but can be used for clean road conditions
P037 for wet and dusty Enduro conditions.

 

Well, I do. Actually is exactly what I like to hear. Unless you do lots and lots of track days or even go into competitions, what is the point in using so called "performance" parts?

 

I was looking at getting a K&N filter but there is so many opposing opinions

 

@BabyD
There's absolutely nothing wrong with the OEM filter. Excellent filtration with decent flow.
The only advantage to an after-market filter is that you can clean it and re-use it.
It is not recommended to use any filters which requires oiling on a modern engines with ECU maps and O2 sensors.
Caveat Emptor.

 

That's got to work!

 

It's mainly for the bubbles out of the exhaust, adds a little to the rides