I had them on my F4i and they were real good. A good savings from actually having to pay for rearsets. They rotate around the circular base so technically they can go anywhere along that pivot point. The can definetely go higher for the track and lower for cruising. The only drawback is that because the peg is offset from the center of the pivot, it increases the distance from the shifter. It isn't long but it's there. One bad thing was that I tipped the bike over in the driveway and since they don't spring back like stock pegs do, they snapped off. Don't worry though, they won't snap off while riding, I really peg weight when I lean over so your body weight plus won't damage them at all.