Due to their funky bend and brackets, I had problems mounting the Cycra's to Alumilites, Renthals, & Pro Tapers.
I sold them to a friend who was confident he could get them to work on his Renthals, NOT !!!!
He called Cycra's tech guy who said "you aren't the only ones with that problem". Go Figure. :bang:
I have the same problem with my Twinwall ends being to large in diameter. Get some aluminum tape and wrap the expandable bar ends to get a snug fit, then tighten it, it should go. I tried other tapes (electrical, teflon, masking, pipe wrap 10mil) which didn't hold up as long as the aluminum tape.