I couldn't help but notice that the 2010 YZF450 seems to borrow a few concepts from Husaberg one year after the new Husaberg engine design was released. The '09 Husaberg 450 used a tilted and backwards motor design to improve handling. Also, the fuel tank under the seat and relocated airbox were done on the '09 Berg. Same with fuel injection. The Yamaha design is nice but not innovative. Perhaps it will work even better. Yamaha also followed Husaberg in 1998 when they made the YZF400. One year earlier, Husaberg introduced the '97 400, the first modern day high performance lightweight four stroke motocross bike, which had a compact engine running at high rpm's. Not trying to knock Yamaha, they might even have a better product.