I a new nytro owner 2011 xtx. I been reading about the 14.5 rollers in the clutch. I though my viper used those rollers stock so I looked at the service manual and sure enough it does. I found out that the viper roller are less than 25.00ea. from Yamaha sports plaza in Oregon. I did notice that the viper rollers use a Durlon bushing instead of the Vespel like the Nytros but for almost 1/2 price I think i'll just buy the viper rollers. I can always put the Vespel bushings in the viper rollers when they wear out.
