Just be sure before you send anyone your money that BOSS has indeed built this seat. My main riding partner thought he bought one this offseason and then after selling his old BOSS seat and only to get the run around from BOSS about how they havent even built the tanker for yamahas yet as of December of this winter. They may have built them in the past 4 months but it might be worth a call to BOSS to see if they have them built yet.
On a brighter note, my other riding partner has one on his RMK and it works great although it did not come with any directions and after calling BOSS for directions he ignored the way boss told him to route it and went with some recommendations that guys with auxillary fuel tanks suggested and it works great. BOSS makes a great product but it just seems that they are spread sooooo thin and while some people get fantastic customer service from them (including me) others end up banging their head against a wall (my two main riding partners).