First off I had to cut the throttle side grip bar off because of the indentation and wield on one that would accept the XOPRODX internal throttle. They are out of business(XOPRODX). If you are not able to do the work yourself, I would call Sam Nemi at Broward Yamaha or BMS. He would remember how mine was done and could help you. XOPRODX didn't make the throttle so I would think it's available. If anyone would know, Sam would.