The stock Ducati air filters are actually quite good, the only real benefit to a K&N or any other "performance" filter is that they are reusable (washable). I will be changing mine over to a performance one at about 12,000kms when the original air filter needs to be replaced.
That way i can reuse the performance one for about 5-6 more services before needing a new filter again which in time will save more money.
That way i can reuse the performance one for about 5-6 more services before needing a new filter again which in time will save more money.