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 50 mm deep with a blunt profile for stable aerodynamic performance at typical angles to the wind sapim cx ray spokes and ceramicspeed bearings are standard saving a further 65 g over team model for an all up weight of 1537 g benefits