I used them on a Suzuki Bandit I had about 8 or 9 years ago. I found them fairly easy to install, and they had two settings - hot and even hotter. I also found out you should put tape on the throttle side for insulation or one side gets much hotter than the other without it. All in all I thought they were a good value and worked well enough.
I have something similar on my FJR, the ones I had were marked throttle and clutch, I assume for the insulating factor, stuck them on over the oem grips and then put Grip Puppies over them, work great.
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