Spark plug question on 2010 RS Vector GT

[zxc700]

Looking to pick up some extra plugs for new sled that I just bought.

I have seen and heard two different plugs from NGK, CR8E and CR9E.
Wondering which plug # is right. Also anybody chime in if you are using a different plug and why

First time Yamaha buyer, 25 yrs riding Polaris. Lots of new part numbers
I will be looking up

Thanks for helping out a rookie

 

[theCATman]

The CR8E is the correct stock replacement.

Some guys have gone to CR10's claiming a power increase. It's been a beaten to death topic over & over again.

Just stick with the 8's.

 

[09nytro]

I wood run the stock plugs & with this sled u don't need to carry extra plugs with u its not a 2 smoker

 

[swmichvector]

upgrade to the iridiums and you will never need plugs again