Hope RS4 Hub
Uses 4x 17x28x7 Bearings AKA 17287.
Pro 4 freehubs are compatible with this model and vise versa, I.E you can use a RS4 freehub on a pro4 hub.
Will get a mic soon.
0:00 intro/ What the video is about
0:25 RS4 & PRO 4 Freehub interchangeable physically
01:03 RS4 use 2 pawl system for less drag
01:20 QR 130mm spacing (135 qr is also available & maybe Thru axle?)
02:05 3 Hope branded bearings and 1 Enduro branded?
03:17 Assembling it (start of)
03:30 Bearing size 17287 or 17x28x7
04:05 Talking bearings
05:10 Drive side bearing needs a tool or long socket
05:43 My set up
06:22 Pressing in drive side bearing
09:17 How deep the drive bearing sits (Reference)
09:42 1mm washer
10:00 XHP222 Grease
10:59 Fitting freehub
11:52 Labyrinth seal tool HTT1003-06S
12:05 Fitting labyrinth seal "correctly"
13:36 End caps (Black non drive side, silver drive side, seems to always be that way)
13:55 Finito