The Flow EX3 craves high speeds and the most demanding trails and courses. It's designed with increased stiffness, without compromising its ride quality and ability to absorb impacts. FEATURES: Rim Durability - rim has internal reinforcements and thicker walls vs. the Flow MK3 and is built to take more abuse Hub Durability - steel axle, triple freehub bearings, and reliable engagement Bead Socket Technology (BST) is a patented rim shape that creates an advanced airtight system for tubeless bicycle rims and tires, making an easier to use, safer, and more secure interface between the rim and tire Flow EX3 wheels include pre-installed tape for tubeless use and presta valves The rim's Tiebeam brace and patented low sidewalls of the Flow EX3 resist dents and air loss during impacts The E-sync hub is built for strength and durability, with chromoly axle, double row Enduro bearings, 6066 alloy shell and heat-treated steel ratchet ring Bead Blasted “BBQ” finish for added durability Weight: 1159 g SPECS: Hub/Brake Compatibility: 6-Bolt Disc Color: Black Wheel Size: 29" Cassette Body Type: SRAM XDR ISO Diameter: 622 / Road / 29" Rear Axle: 12mm Thru x 148mm Valve: Presta Rim Width (Internal): 30 Tire Type: Tubeless Ready