I bought this to put on my flatbed trailer so I can tow a Kymko Super 8 150x. At first the Super 8 seems to fall somewhere between two possible chock sizes, but the good news is that it makes it even more reliable. I had no issues with the chock and it holds the bike securely while I tighten it with the ratchet straps. I've downloaded it myself a few times now with no problems. That's a great choke!