The all-new M8 is ENVE's flagship gravity wheel, for the weight-conscious rider that typically pedals up what they come down. It's an excellent choice for enduro riding, bike parks, and courses where smooth terrain and/or weight savings trump the need for the added flat protection with its Protective Rim Strip. The M8 rims were designed to achive the damped, quiet, ride attributes of alloy, but with the toughness and durability of carbon fiber.The rear rim has been optimized for power transmission, tracking, and durabilityWide Hookless Bead - Gravity optimized anti-pinch flat protectionInnerdrive 80pt engagement hubs with CX Ray straight pull spokesBrass external nipples with Nyloc threaded locking insertBuilt for Enduro, Gravity Race and E-MTB ApplicationsApproved for E-bike useBacked by ENVE s 5-year Factory Warranty and Incidental Damage ProtectionItem SpecificationsCassette Body TypeSRAM XDColorBlackDesigned for ebikeYesHub/Brake CompatibilityCenter-Lock DiscISO Diameter584 / 650b / 27.5"Rear Axle12mm Thru x 148mmRim MaterialCarbonRim Width (Internal)29Tire TypeTubeless ReadyValvePrestaWheel Size27.5" ENVE Composites M8 Rear Wheel Rear Wheel UPC: 810125058639