Wide 25 mm all carbon fiber rims ideally support fat race weight clincher tires at lower inflation pressures for more grip and comfort 3t linear system optimizes build quality spoking is 20 front24 rear with internal inverted nipples carbon fiber rim is 35 mm deep with a blunt profile for stable aerodynamic performance at typical angles to the wind all up weight of 1507 g saves more than 300 g over pro model mostly at the rim where weight savings are key benefits for the rider inclu