- Fast and robust gravel wheel, features tubeless and hookless rim profile - Ultra-wide internal profile for decreased rolling resistance - Ability to run pressures under 30psi (2.1 bars) - Wide and deep profile - Integrates seamlessly with gravel tires to increase aerodynamic efficiency - Applies Zipp’s Total System Efficiency to high-performance gravel - 76 / 176 DB hubs with Center - locking interface XDR or SRAM/Shimano freehub bodies - Ships with 12mm front and rear end caps - Max tire pressure 50 psi/3.45 bar - Lifetime Warranty