Looking for a way to lighten your load without compromising on stiffness or durability? Then check out this tubeless Easton RA90 RT front wheel. It"s the same technology as the fabled Easton EA90 SL/SLX models, with the ceramic bearing R4 hub and Sapim spokes, but with an airtight rim that can hold up to 100PSI. They weigh in at 1550 for a pair...but you get to leave the heavy innertubes at home, which is a definite plus. Tubeless also cuts down on the number of flats, and makes it much easier to limp home even in the event that you do have a puncture. Proprietary airtight rim holds a road tubeless bead securely at up to 100 PSI Lightweight EA90 construction helps shed grams so those hills feel a little shorter Additional spokes helps improve durability over SLX model Exclusive Gen 4 rim means the rear rim is designed more robustly for increased stiffness under pedaling loads R4 hubs spin up fast and keep rolling thanks to long wearing, lightweight ceramic bearings Newly designed pawl carrier flexes less under loads Straight-pull, double-butted Sapim spokes are lightweight and help increase aerodynamic efficiency For use with Shimano 10-speed cassettes