I am about to upgrade my sons eton viper with new rims and tires, however, I am not
to sure about the bolt patterns front and rear. I think they are 4 - 110. Does anybody
know these patterns for certain?

 

You are correct, 4-110

 

Keep in mind and this happened to me. I went with .190 wheels and learned that the wheel bolts were then too short to accommodate the thicker rims. stay with .125 or buy longer studs and take them to your local machine shop and have them press the bolts in for you. I went to our local Yamaha dealer and bought wheel bolts for the banshee and they worked fine.

 

Thanks for the input. I did purchase .125 figuring that they would be strong enough for junior.
I purchased two sets of holeshots on douglas .125 wheels. The fronts are 19x6x10 on 10x6 wheels
with 2+4 offset. The Rears are 18x10x9 on a set of 9x8 wheels with 3+5 offset. The rears are a bit
different than what everyone at the local track are running. I wanted to try something different. If
the don't work out I will put them on my z400.

 

For a 50 you should look into 16-6.5-8 Shredders or ITP Snowhogs

 

Ya that's what what everybody is running, but I had to be different. They really aren't that much different than the
turf tamers everyone is running. They might even be lighter. The holeshots are 18x10x9 and the turf tamers are
18x9.5x8. Not a big difference. And these are performance race tires, they have to be lighter.

 

That's a lot of tire for a 50.