I have to admit that I, along with others have an issue with the price of some of the accessories. With that being said, OMG the Power difference after having the air cleaner and flash done on my Roadmaster is AMAZING!!! You can hear the Mass amounts of air being sucked into the 111 BEAST!!!! Needless to say the wife was Not so impressed after being Mashed up against the trunk for the rest of the day.... It is High priced but in my opinion Well worth the money. Happy riding Everyone!!!