spark plug?!?

Is there a better plug for the 650sr than the ngk b7es?

I want to replace them, but if there is something better does anyone know what it is?

I had a 300 KTM,tried every exspensive plug
I could for durability.None lasted much longer
than the NGKb8es that it came with.At $1.95
at Pep Boys I could go a whole summer for 10 bucks.
How many miles or years do you get on a set? I ride
about 4K a summer on my KZ.I usualy change plugs
every year,but this year I still ran last years
plugs.Gotta get back down to Pep Boys.

ngk's for me too!! i dont think theres anything better for these old beasts

I use Denso (Nippondenso) W22ES-U plugs with good results in my stock KZ650C1. Ed

thanks, guys for all the input
Got some b7es plugs.

Spaced them too big at first, got some popping, spaced them too small, had some jerking. got the gap about perfect at .73mm. oh well i suppose it takes some playing with to get it right.

Changing to Andrews coils made my spark plug
life much better.