There are 2 different Vapor hubs in circulation. The old one (Vapor), which we stopped selling a couple of years ago, has 6 bearings. The one we're currently selling (Vapor 2) has 8 bearings. Bearing numbers for each are below.
Vapor road Hubs ((hasn't been sold in years)
Front: 699 (2 bearings)
Rear: 6802 (2 bearings)/6902 (2 bearings)
Vapor 2 road hubs (model currently in production)
Front: 688 (4 bearings)
Rear: 6802 (4 bearings)