I have a throttle lock on the big11
I have no idea which brand it is or anything as it was on the bike when I got it
Its just added on the end of the grip and just takes a twist to tighten/loosen
I was tightening it one day as I was riding and a cop driving the other way flashed his lights at me, he must have thought I was twisting the throttle
But yeah it works well... although cruse control would rock