K&N® HIGH-FLOW AIRFILTERS

I got one on mine

Good filters many members have them on their bikes.

Chuckie, use the search facility on forum and search for "filter"... there's a ton of topics on that...good read.

Good filters and allow the bike to breath more air in, Cleanable and reusable too, You'll need a fuel processor though if your fitting an aftermarket exhaust system as well, which I've noticed your looking into.

A simple rule with these bikes from 2005 onwards is that you can change to a hi flo air filter or you can change to a hi flow exhaust and the on board computer will cope fine but if you change both of them together to hi flowing systems then you have to add an aftermarket fuel injection system as well or you will be running very lean. K&n are ace but there are lots of other suitable hi flo filters out there but I reckon most of them have K&N originated filters in them

Good advice given here,buy it & enjoy it, it's part of the entire way forward.    If you have no plans for aftermarket exhaust and Hi-Flo filter & fuel processor then don't bother.

Do you have to use the K&N oil on the filter or could you get away with WD40?

Heres a link for a K&N filter for the new style air box K&N New Style Filter

Probably better off using air filter oil Arron (various makes), WD40's only thin machine oil.

Even if you never notice any actual difference using a kn filter think of all the time and money saved fitting one, against changing paper filter every year, they only need cleaning every 50k miles and even on a hard ridden bike you still wont need to do this before 30k and only takes an hour, and unless you are a die hard global explorer most bikers wont do 30k miles in 5 years and in most cases you will have changed your bike for a new one before you ever need to clean the filter. GET IT and FORGET IT.

Agreed.

well put Justin

When you think how long a K&N last and how long it is before you need to oil it, putting on some WD40 could only be described as saving pennies but waiting pounds. Good shout Justin

Is the K&N the best filter to fit go with the Cobra Power Pro?
Or will a jug or a cone be better?

K&N are hi-flo filters & they are the best you can buy with any set up. A lot of aftermarket fancy filter setups use K&N but they will always tell you if they have as a rule.

Cheers Dave. 
I want a M 109 cone at some point.  But the pennies say 
It's a K&N for now. Least I know now that it will do the job and complement the Cobra.

Dave, do you have any opinions on K&N filter vs the spike cone filter ?

I have the spiked cone filter and it definitely has a hi-flo filter in it, not sure which one though, not sure if it's K&N or not. At the end of the day K&N may be the dogs   but I will happily settle for the cats   as long as it's a high flowing filter, I ride a Cruiser not a track bike.

Does the Spiked Cone set up let more air in than the Stock replacement K&N? 
Basically im trying to work out what will go better with the Cobra before i start forking out more cash!!
TY all

Hi Arron, The spiked cone filter probably "will" let more air in than a stock replacement K&N but the K&N will be just as good performance wise (imo) because there's only so much air an 800cc engine can breath in anyway, if your happy with the looks of the stock air box? I'd go that route, if not I'd go for an aftermarket one like the spiked cone or other makes. 

PS. there's also the stock Air Box mod what Dave did to consider. ( - LINK - )

Cone looks great so does Mr Intruders original air filter mod as shown that he did before he fitted the cone