best plug

[honda400exrider]

i am about to change my plug in my 400ex and was wondering if you quys has a suggestion of a "better" plug. i don't know if it makes a difference but if there is who is the best? thanx :D

[Deathbringer]

NGK...works great for me... the only thing you may do is get a little cooler plug...

[Adam496]

id go with the spiltfire plugs

[Deathbringer]

Don't waste your money.... the NGK work just fine.

[300eXTraILRyDeR]

NGK never let me down!!!

[Blysster]

NGK all the way...

9 runs a bit cooler. some say it can help prolong the life of your engine but I'm not sure how true that is...

I tired the splitfire and the only difference I noticed was the higher price for them

[Chef]

I run a DPR9Z, if you have any engine work done, over 10.5:1 compression, i would give this plug a try. Make sure its gapped right too. The gap can change the performance from great to not wanna accelerate on mine..

[PsychoDave]

I run a DPR9Z....it runs great.