Given the fact that the motorcycle press has long shown the reverse-cylinder 2010 Yamaha YZ450F and, implicit, destroyed the maker’s element of surprise regarding this model, Yamaha has come up with a video showing James Steward as the inside man answering to ridiculous rumors heard by Yamaha employees, including Jorge Lorenzo, Valentino Rossi and James Toseland.
The video is supposed to create some buzz about this new model and to announce the launch date – September 8th.
Yamaha has released a video explaining the modifications done to their quarter-liter motocrosser of latest generation, the YZ250F. The bike now features a bilateral beam frame, while the engine now benefits of new valve train, carburetor and exhaust.
Overall, the new 2010 Yamaha YZ250F is supposed to offer a new riding position, handle sharper and deliver a more power with less noise. Sounds tempting to me!
This may not be the latest commercial that Yamaha made for their dirt bike lineup, but it sure is the most inspiring seen yet. Looking at it, most riders feel like gearing up and hitting the dirt on whatever model they got and that’s precisely what I’m planning to do now.
Those who were wondering what more could there be changed at Yamaha motocross bikes in order to improve performance are most likely to receive their answer with a single look at this spy picture of the 2010 Yamaha YZ450F reverse-cylinder.
This Powerpoint rendering shows how the new construction method allows the bottom end of the engine to move forward in the chassis, improving weight distribution and enhancing handling. This way, the exhaust pipe has a straight path towards the silencer and doesn’t need to be taken in consideration when doing the math for the front wheel clearance and also the inlet tract can be simply redesigned to go straight from the fuel injector to the combustion chamber. It even makes us wonder why Yamaha didn’t consider this possibility for the YZ450F so far.
Yamaha is supposed to unveil the completely new dirt bike within the next months and we reckon that it will blow away the competition.
The 2009 MX Championship has already started getting riders, motorcycles and their crews in trouble. These are by far the coolest pictures we’ve come across yet and by the small unstained blue on the front fender, we can confidently say that we’re dealing with a Yamaha dirt bike.
Apparently, as the bikes become better performing, organizers make sure that tracks are even harder to race on and that’s what the audience loves about motocross racing.
