The sl shortshallow carbon handlebar from zipp is a minimalist bar designed for climbers and smaller riders the sl was in research and development for over 4 years and it shows it is stiff enough to grunt over the steepest climbs whilst still smooth enough for all day rides and weight in at a mere 170g for the 42cm model the all day comfort has been ensured thanks to zipps vclc vibration damping technology which is included in all the bars the bars also features dual cable routing grooves