After much debate and searching online for the best passenger handle bar, I decided to buy a set of these Vinxxgrips. I'd like to thank Wasted for allowing me to check them out his out on his bike it made my decision easy. I installed and used them for the first time yesterday, it was super easy taking less then 10mins to install. I'm riding a 2004 r6 and my gf is about 5'2" we went on a short ride for about 40mins,(20 mins street riding, 20 mins highway) and the grips worked amazing for both. I feel more comfortable and have better control and she feels more secure and comfortable as well. Normally after a comparable ride without them my gf's wrists would be hurting and she doesn't feel as secure. Overall I am really happy and satisfied with my purchase and would recommend this product to anyone riding 2up. (I ordered them on April 9th and received them April 15th from the same site above, http://www.moto-tuner.com/default.asp)