[Giddy up]

I don't know for sure...however I have this set up and no spacers. I ordered my combo together and it could have come with longer bolts. I did have an issue with several bolts bottoming out, and breaking when trying to torque them to spec. In the end I just tightened them up with most not being torqued to spec. With that said I have not had any issues with them what so ever. They leak a little air over time but only like one lb over several months. Hope this helps a little and in my opinion it's a great combo for my 1k.