I have a SXViper 700 with a 136" long track conversion kit and i just did a HEEL CLICKER kit on it, with a few other mods, the clutch kit is the best bang for your buck and it totally changed my viper from bottom to top!!
Outta the hole its crazy fast with little track spin mid range is still strong and didnt take away any from the top end still does 120mph top end on the gauge
Would recommend the heel clicker set up to anyone if you got the money its the best kit out for the old yamaha's
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