if this is correct :The 25mm tall, 6005 aluminum alloy V- section rim is laced with 24 bladed spokes in a wind cheating 2 X, parallel lacing pattern that provides outstanding aerodynamic properties second to none for a spoked wheel. The smooth turning forged hubs provide years of service with minimal maintenance. The rim’s machined sidewall ensures even and smooth braking. 9/8 speed Shimano compatible. Weight: 950gr. front, 1150gr. rear

Then the weight difference isnt too much off from ultegra/mavic opens then. It seems this is the average weight of a >500 dollar rimset