Kirby,
Yes, it is the twisted throttle mount. The key to making it work is the spacers used to gain the height needed. It's been a couple of years since I mounted mine but I think I purchased some taller spacers at the local hardware store to raise it just a bit as not to allow the seat to come into play. For some reason I think the ones that came with the mount were to low. Not a big deal, I don't recall it being a difficult task change them out. By the way, I really like my Ultimate King Seat, well worth the investment.