Hard to comment on the sound I9 hubs because a lot of people don't seem to be able to figure out that they need to be re-lubed occasionally.
Speaking of fresh hubs using DuMonde Tech freehub lube, the Vaults are a bit quieter (and a notably different pitch/whine) compared to an Industry Nine hub and both are louder (and a different sound altogether) compared to Chris King.
Nov. 10, 2018, 10:36 a.m. - Andrew Major
Hard to comment on the sound I9 hubs because a lot of people don't seem to be able to figure out that they need to be re-lubed occasionally. Speaking of fresh hubs using DuMonde Tech freehub lube, the Vaults are a bit quieter (and a notably different pitch/whine) compared to an Industry Nine hub and both are louder (and a different sound altogether) compared to Chris King.