Based on this and a bit more digging, my best guess is that she is either Chelsea Zinn or Devon Lee. I tried to confirm this by seeing if I could find a scene with Chelsea or Devon on a motorcycle (since there is one in the scene you refer to) and the good news is that I found one with Devon, but the bad news is that it isn't the scene you're looking for.

I don't know either model's work well at all, so I went to Indexxx to find more photos. I was hoping to find photos from that were from that scene, but I didn't. I'm pretty sure it's one of these models, though I hope someone else can confirm that and give you the scene information.

Good luck!

For ease of reference, here are a couple of screenshots from the link you gave and from the fifth scene.

[Link]