Spark Plug

[Waitforme]

Is anyone using a regular spark plug vs iridium? Dealer says I should only use iridium brand (which is @$18 per plug).

Anyone else have a problem with plug fouling? Bike is totally stock with only about 8 hours on it

[stumpleg]

I have been using the iridium. Change it about 3-4 times per year if everything is going allright. Here is the number that i get IFR8H11 5068

[450rdr424]

it recommends the ifr9h11 in the manual if you are running high speeds for a long time, like race situations. i just put a top end in my 06 and put the 9 in it instead of the 8 to see if there is any difference

I use the 9 also. My dealer sells them to me for $10

[pro-rider46]

Originally posted by TRX450R_Racer
I use the 9 also. My dealer sells them to me for $10

lucky

[stumpleg]

Hmm..pretty sure i use the one I put down, maybe not. $10 is cheap. I pay $17 for one.