Dear Dirt Wheels,
What do you think of this hybrid build? All the work was completed in-house. The machine started life as a 2005 Yamaha YFZ450, and the engine came from a 2003 Yamaha YZ250 two-stroke motorcycle.

Nathan Jones
Via the internet

What do we think? Yamaha should offer a 2-stroke version of the YFZ just like they do for the YZ dirt bike. We can only imagine how much fun it is to throw that lightweight pinger around on the dunes and track. Awesome build, Nathan! – Dirt Wheels