I picked up a set a Harley take-offs and gave them a try. I had some vibration as others have mentioned. I picked up some 3/8" x 1/4" vinyl tubing and made a sleeve for each mirror about 1.5" long. This took all vibrations out of the mirror. I will post a picture, when I get a chance. I also put a rubber washer on before I slid the tubing on. I don't think that helped.