[hotter plug for 450r] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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hotter plug for 450r
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Posted by: fatkid400

Has anyone switched to the hotter plug reccomended buy the owners manual for wide open/high speed? Does it make any difference for starting or throw off jetting or anything like that?

Posted by: predatorkick@$$

Ifr9h11 is a colder plug not hotter!! the higher the number the colder it is!!

Posted by: 4bidden

Yes...in regards to NGK plugs...higher number is a colder plug.

Posted by: D Bergstrom

As every one else said, it is a colder plug. I pretty much run this plug all the time, as I race desert and find myself at high speeds for long periods of time. I have not noticed any difference in the way the quad runs with either plug. If it was not for Honda's recomendation, I would not even run it.

Doug

Posted by: fatkid400

ok enough said.I thought it was a hotter plug so I wont even mess with it. Thanks everyone.