http://www.skf.com/twowheeler/produc...les/index.html
https://www.gasgaspartsguy.com/gas-g...uctid=-6508269
Just note that these probably contain generic product photos. I'm new to GasGas and I know that some of the rear wheels have 3 bearings against the usual 2 for a KTM or Beta for example.
For me, these are a no brainer and I would never fit anything else. I normally keep bikes for 3 or 4 years (300 hours / 5000 miles) and fit one of these kits as soon as the oem bearing need replacing. I have never needed to replace an SKF set.