KR-1S.co.uk Forum

Hi,
I've been trying to work out which spark plugs are better, BR10EV or BR10EIX? The bike came with BR10EV's in (although they were fouled, so can't really judge how well they work...), but I was thinking about putting the iridium ones in. What do you guys use?

I use the BR10EIX.

The same for me.

I use the BR9EIX, unless it is going to the track, then I use the 10.

Cold fouling can be an issue if you are not thrashing the knackers out of it to keep the plug temperature up. Not so easy to do, what with speed cameras and traffic these days.