Jeffrey Herlings went fastest in the MXGP class half a second quicker than Lucas Coenen – a KTM 1-2.
Brian Bogers put in a superb lap for third ahead of his team mate, Glenn Coldenhoff.
Romain Febvre rounded out the top five ahead of Isak Gifting.
In MX2, Sacha Coenen put in a hot lap to go fastest and was almost a full second faster than anyone else.
It was Kay de Wolf who was the second fastest over his team mate, Liam Everts with Mathis Valin fourth fastest.
Camden McLellan rounded out the top five over Simon Längenfelder. Red plate holder, Andrea Adamo was twelfth.
MXGP Timed Practice:
MX2 Timed Practice:
