Ibis Lo-Fi Carbon Bar with Mor On the ends Ibis new Carbon Hi-Fi and Lo-Fi handlebars are adjustable using two 25mm wide aluminum inserts that thread into the ends of the bar. You can easily swap between 750mm and 800mm, or, you can cut the inserts to any measurement in between. For instance, take 10mm off each end for a total 780 width. Change your mind? Replacement inserts are available from Ibis.