Re: The new E-ton viper 70
Many bikes have a green wire on the cdi that people cut to eliminate the rev limiter. Look to see if you have one. Cut the wire and see if the bike runs at all or if the limiter goes away. If the bike won't run, just reconnect the wire - no harm done. If the limiter goes away, install a toggle switch somewhere you can reach. Then you can turn it on or off as you need to. Reply to let others know how it turned out.
If you want more speed, either now or the future, look at my post for "Scrambler 50 tuning help please" in this forum.