The Alpha rim is using a traditional straight hook/lip wall design while the omega rim has a outward “flanged” wall. This rim design supposedly is stronger which they have been testing/verifying since '22 on downhill/super enduro wheelsets. They have now made the design into a low weight cross-country design newly released as “supreme edition” lineup of wheels. It in their opinion is the next generation of rim design in MTB’s.
Here is a picture of what the rim looks like
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If you have any other questions or potentially would like to order a wheelset, please send me a PM.