I´ve been riding UM bikes for 3 years now. Great warranty if you can get them to honor it! I had a different bike last year, the 250 Cruise. I enjoyed it until the engine took a dump, not a problem it´s under warranty. 9 months later and 3 repair attempts that never left the dealer, UM is still giving the dealer greif about the repair. They will not deal with customers directly making it even more frustrating. I ended up buying the next size up, the 650S. What was I thinking! But, so far, so good. It rides great, plenty of acceleration and the gas mileage is worth bragging about... 40mpg during the break-in period. The rest of the story remains to be seen. Wish me luck!