I have always run 4 wheels since old turbo Vmax 4's 750cc in 1993
Way too many guys come in our shop with looking all over town and for new wheels!
Why wreck your holiday for half a pound and 4 wheels make for easy turning track.
Just my 2 cents worth!
I understand your point. However, what we designed here was a way to run a between the rails wheel set up for people who want to run this style of set up and still maintain reliability.
Stock Yamaha bearings are a light duty 6004 bearing that is 12mm wide and 42mm O.D. The OEM set up is 3 wheels for a total of 36mm of bearing width across the rear axle. If you go to a 4 wheel set up, you are still using the same light duty bearing and have 48mm of total width. Our 3 wheel axle/wheel set up uses a 6304 series bearing that has larger rollers ( 52mm O.D. ) and is 15mm wide per bearing. So, 3 bearings equals 45mm of total bearing width with a higher grade bearing. Almost equal bearing load surface with a higher class of bearing. I'll take that to the back country every day of the week and twice on Tuesday.
And if you are still really concerned about running 4 wheels, that will fit between the rails too
![DSC00220.jpg](http://i285.photobucket.com/albums/ll44/scmurs/Misc/DSC00220.jpg)
Scott