The FR 541 may not be your first rim, but it aspires to be the last. The new rim shape improves the impact resistance, enabling you to push a little harder on the trails. It also enhances the pinch flat protection for a trusty ride on rougher tracks. Build this rim with care and it will reward you with resistance and lightness for a long-lasting bond.Aluminum welded construction, hooked tubeless designPHR Pro Head Reinforcement system increases the load-bearing surface of the nipples on the rim and reduces localized stressesProvides a 17% increase in pinch flat resistance compared to the previous FR 560 rimDisc brake onlyItem SpecificationsBrake TrackNoneColorBlackDefined ColorBlackHub Drilling28ISO Diameter622 / Road / 29"Manufacturer Spec ERD (mm)603Rim Center Offset (mm)0Rim MaterialAlloyRim Width (Internal)30Tire TypeTubeless ReadyValvePrestaWeight605Wheel Size29"