I'm sure it has the reverse notch, but the twin trax helix does not have as deep of a reverse notch as the single track helix. They wanted to keep more mass in between the other set of ramps for support.
If you have the sled turning a lot of rpm when going into reverse, it'll jump the notch. If you can baby it into reverse, you will probably be good.
3 years ago, we changed our design and had our custom cut helix's cut with a deeper reverse notch because every once in a great moon a customer would call and had problems with them jumping out. Funny thing is, we haven't had a call since, but Team/Venom still cut their twin trax with the same shallow R-notch.
