Developed and tested using Turbulent Aero technology, the 42/49 is designed for everything you do, providing all-day capability with aerodynamic sensibilities. Raced at events as varied as the Paris-Roubaix and the Giro D'Italia, the 42/49 wheels have a lifetime warranty supported by a no-fault crash replacement. And in keeping with Reserve workmanlike ways, you'll find external nipples, standard spokes, no tire limitations with a semi-hooked design and no rider weight limits.Built with DT Swiss HubsWind tunnel tested using Computational Fluid Dynamics (CFD), with the goal of maximizing aerodynamics while enhancing stabilityOptimized carbon fiber rim construction allows Reserve to define the exact fiber orientation for each rim model, to maximize stiffness and strength without sacrificing weightItem SpecificationsCassette Body TypeShimano HG 11/12-Speed RoadColorCarbonDefined ColorBlackFront Axle12mm Thru x 100mmHub/Brake CompatibilityCenter-Lock DiscISO Diameter622 / Road / 29"Rear Axle12mm Thru x 142mmRim MaterialCarbonRim Width (Internal)24.8Rim Width (Internal)25.4Tire TypeTubeless ReadyValvePrestaWheel Size700c Reserve Wheels Reserve 42/49 Turbulent Aero Wheelset Wheelset UPC: 192219464206