I'm not a fan of this throttle lock. I had the Kaoko on my R3T for about 6 months but removed it in favor of the BrakeAway set up; I removed that after about a year and now have the Vista Cruise that I have been really impressed with it.
But back to the Kaoko: It was uncomfortable (the spikes were always in the way of my throttle hand) and not easy to use while at speed. The ratcheting action required of the throttle hand was inconvenient and difficult to engage/disengage while riding.
I'll say that the Kaoko is well-made, as is the BrakeAway. Still, it is too expensive ($125+) and too difficult and uncomfortable to operate.
Try the VistaCruise instead. At $25 it looks good, functions well and is easy to use while on the road.