Is it possible to export a 100fps clip in 100fps? I want to grade a clip before editing and send to the editor. From what i can tell, it´s only possible to export up to 60fps
Short answer nope: 60 frames is max.
Like Ann said, you can export up to 60 FPS from premiere pro.
"I want to grade a clip before editing and send to the editor"
If you grading the clip in premiere pro and then want to get it edited by an editor than why don't you share the premiere pro project with an editor or you can export the LUT from premiere pro and share with the editor which can be imported back in premiere pro.