I agree with Kris, save your money. Purchase one of the quality plugs listed above. I prefer Bosch.Probably will get flamed here, but most of the "off brand" aftermarket spark plugs are designed to separate consumers from their money. Anyone remember the Split Fire plugs from a few years ago? I'm pretty sure AC, Champion, NGK & Bosch have forgotten more about designing spark plugs over the years than these "johnny come latelies" will know.
I've always stuck w/ whatever the OEM recommends in my vehicles & toys.
In the 60s & 70s Bosch seemed to be quite popular in snowmobiling circles (ski-doo/Rotax used them as OEM equipment). In the late 70s they switched to NGKs. Since then the only reference to Bosch plugs that I've seen was in Stihl equipment.I prefer Bosch.
NGK all the way. If you've ever ran 2 strokes, you know what I mean.
X2 NGK is the best in my opinion..... Had 2 strokes all my life and never had the problems with NGK as with other plugs......NGK all the way. If you've ever ran 2 strokes, you know what I mean.
I've had issues w/ NGKs in the sleds, but they were due to FI issues and/or misapplication. My folks have used Champions in their Polaris sleds (what they specify) & haven't had any plug problems.I agree 100%. I have been a 2 stroke guy all my life and wont run anything but NGK in any of my toys including the Ranger. In my small 4 stroke equipment the basic Champion plugs do just fine. I never bought into the "gimmicky" spark plugs. The old standards do just fine for me.