Reynolds was stoked to be on top of the times but admitted his lap could have been even better.
"I gave a little away across the top and did a bad job somewhere but that is what practice is about," he said.
"The car performed very well today. It is good to be on Thursday pole."
Red Bull Racing team boss Mark Dutton was confident the team would repair van Gisbergen's car and that it wouldn't impact the rest of his weekend.
"The most important thing is that the roll cage seems to be fine," Dutton said. "We will go over that with a fine tooth comb but the initial inspection is fine.
"We have to go through the rest of the car but we have got the people to do the job.
"It went in hard and the front upright - we build them pretty strong - and I have never seen one that bad.
"The good thing is Shane is OK."
While the times were fast on Thursday they are expected to drop as teams continue to make gains, which means the lap record will be under threat by the time we get to qualifying late on Friday.