Hi,
For spark plugs I'd certainly go with NGK. I think it's CR8E you need. You can get them from Amazon at around £4.50 each as an "add-on" item, meaning they have to be ordered alongside something else. I'd be careful about ebay in the case of spark plugs as there are many fakes about but I checked these quite carefully and these Amazon ones look legit to me.
For the oil it' s a matter of personal preference, personally I use Motul 5000 or 5100, but any brand name semi-synthetic labelled as specifically a motorcycle oil should be fine. Some would advise to avoid car oils as they may have incompatible additives for the wet clutch. I've always used ebay for this but from a reputable seller such as Busters or Demon Tweaks, around £35 I think. I change mine every 4000.
The air filter is up to you, but I would go with a K&N. I didn't notice much of a difference but it certainly didn't hurt any and at least you know you have a quality component which you won't have to service very often, and when you do it can be cleaned rather than replaced. This having been said, if you're short the OEM filter will be fine of course.
For coolant I used Halfords OAT premix with good results, but the important thing here is that if when you drain the old coolant you find you have the old glecol-ethyl based stuff in there (blue) then you need to thoroughly flush out the old stuff with water (or even distilled water if you're OCD about these things) before adding the new stuff. They don't mix well and would form sludge. I'd recommend flushing just to be on the safe side unless you're sure it's already OAT in there.
I think it's the nature of service items that none of the above are going to give you any noticable performance increase, but the bike will appreciate it, and certainly if it's new to you then these should be top of your list.
Maybe also look at brake pads. I like EBC organics personally, but personal preference to suit your priorities.
Andy
PS) If the bike is new to you, then had anyone yet mentioned the front sprocket nut epic?
For spark plugs I'd certainly go with NGK. I think it's CR8E you need. You can get them from Amazon at around £4.50 each as an "add-on" item, meaning they have to be ordered alongside something else. I'd be careful about ebay in the case of spark plugs as there are many fakes about but I checked these quite carefully and these Amazon ones look legit to me.
For the oil it' s a matter of personal preference, personally I use Motul 5000 or 5100, but any brand name semi-synthetic labelled as specifically a motorcycle oil should be fine. Some would advise to avoid car oils as they may have incompatible additives for the wet clutch. I've always used ebay for this but from a reputable seller such as Busters or Demon Tweaks, around £35 I think. I change mine every 4000.
The air filter is up to you, but I would go with a K&N. I didn't notice much of a difference but it certainly didn't hurt any and at least you know you have a quality component which you won't have to service very often, and when you do it can be cleaned rather than replaced. This having been said, if you're short the OEM filter will be fine of course.
For coolant I used Halfords OAT premix with good results, but the important thing here is that if when you drain the old coolant you find you have the old glecol-ethyl based stuff in there (blue) then you need to thoroughly flush out the old stuff with water (or even distilled water if you're OCD about these things) before adding the new stuff. They don't mix well and would form sludge. I'd recommend flushing just to be on the safe side unless you're sure it's already OAT in there.
I think it's the nature of service items that none of the above are going to give you any noticable performance increase, but the bike will appreciate it, and certainly if it's new to you then these should be top of your list.
Maybe also look at brake pads. I like EBC organics personally, but personal preference to suit your priorities.
Andy
PS) If the bike is new to you, then had anyone yet mentioned the front sprocket nut epic?