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.Weight: 1159 gRim Durability - rim has internal reinforcements and thicker walls vs. the Flow MK3 and is built to take more abuseHub Durability - steel axle, triple freehub bearings, and reliable engagementBead 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 tireFlow EX3 wheels include pre-installed tape for tubeless use and presta valvesThe rim's Tiebeam brace and patented low sidewalls of the Flow EX3 resist dents and air loss during impactsThe E-sync hub is built for strength and durability, with chromoly axle, double row Enduro bearings, 6066 alloy shell and heat-treated steel ratchet ringBead Blasted BBQ finish for added durabilityItem SpecificationsCassette Body TypeSRAM XDRColorBlackDefined ColorBlackHub/Brake Compatibility6-Bolt DiscISO Diameter622 / Road / 29"Rear Axle12mm Thru x 148mmRim Width (Internal)30Tire TypeTubeless ReadyValvePrestaWheel Size29" Stan's No Tubes Flow EX3 Rear Wheel Rear Wheel UPC: 847746061106