Vittoria Barzo 29er Mountain Tire. Vittoria has long since been synonymous with high performance road tires, and their considerable legacy on asphalt now continues in the off road realm with the Barzo 29er mountain bike tire. The Barzo is all about striking an optimal balance between light weight, low rolling resistance, and traction on a variety of terrain. In other words, this is one exemplary cross country tire. The medium block pattern and alternating center ridge will inspire riders to push the pace, yet there's still ample grip to handle technical terrain such as looser gravel or dirt with aplomb. A supple 120 TPI casing and folding bead help keep the weight to a minimum which is music to one's ears for anyone seeking to let it rip out on the trails.