I have Hot grips and love them. Like many other people I know, I could never see the need for a Throttlemiester, but here in this list you would think they were the neatest thing since inflatable tires, so in effort to keep up with the Jones, I picked up a Throttlemeister. It was quite a trick to get it to work correct. Throttlemeister told me you do not need the friction plate with hotgrips. I could not make it work without the friction plate, but the standard friction plate will not fit. I ended up having to make the friction plate about 1/2" long, then glued it to the end of the hotgrip. Then I was faced with the problem that the bolt was not long enough because the of the Hotgrips extra length. So I got a 70mm bolt, and then upon trying to get the 60 mm one out, the unthinkable happened. "Inner Bar Weight slip" I think this was due to using threadlock and messing with it too much. So after all that BS, I had everything so it would fit, but now the throttlemeister would just spin. So I took off the brake master cylinder, removed the throttle tube, removed the entire clip on bar, and tried to figure out what was going on. It appears there is some kind of a clip that stops the inner bar weight from turning. It fits into a hole on the end of the clipon bar. Rather than trying to replace the stupid clip and risking this happening again. I went to the hardware store and got one of those pins. (I forget what they are called, their like a nail with no head, that expands when being impacted.) I drilled all the way through my clipon about 1-1/2 to 2 inches from the end and the inner weight, drove this sucker (pin) in there, then used my fancy Dremel tool to make it perfectly smooth on the outer clipon. The good news it that inner bar weight is going no-where. It does not slip, or spin at all and the thorttlemeister works perfect. Karl Marsh