Yamaha may not raise the stakes in the 250cc motocross/supercross class with their 2010 YZ250F model, but the bike does come with a new, more compact "Bilateral Beam" frame and KYB suspension that allow the rider to control it easier. Also, the engine now features modified valves, is being fed through an upgraded carburetor and breaths through a revised exhaust with “D” shaped exhaust port. All the modifications translate in more low-to-mid rpm power, which is precisely what the rider needs during motocross races. We have put together an article based on Yamaha’s press release, so hit the jump to read it. > More
In 2010, Yamaha plans to rule all competitions involving 450cc dirt bikes with their entirely redesigned YZ450F model. This is a bike that with ingenious engineering solves a big problem for all bikes in its category – space. It features a reversed cylinder engine allowing the entire reorganization of the engine bay and it is all mounted on a completely new, lighter frame. The rest is just a matter of finesse and it is all covered in the following article. > More
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.
Yamaha’s new YZ85 stands as one of the best means to power yourself from mini bikes to the real think. Even though it still is an evolutionary step in an ambitious rider’s career, this is the bike on which the first racing skills are being developed and that’s all that matters sometimes.
A smaller replica of the YZ250 and YZ125, the revised two-stroke model is sure to be a great success because no matter what you’ll do, it doesn’t manage to stay behind even if you play around with palls on bigger, but not smokier rides.
Designing a bike is never easy, but it seems that Yamaha has got the perfect recipe as it pulls it through, managing to release better performing competition bikes with each year that passes. For 2009, the YZ125 doesn’t miss its revision and further perfects the already great features such as the engine and chassis. Even though not the most important model year because the bike was also improved for 2008, it does catch our attention once again, and that is never a bad thing. > More
One of the most appreciated and awaited models in Yamaha’s 2009 motocross lineup, the YZ250, is designed to win and it says it out loud. With an YPVS Power valve-equipped two-stroke engine claimed to perform better than any previous generation and a light aluminum frame housing, it provides an even bigger blast out on the track, especially now that it is being fitted with ProTaper aluminum handlebars and Excel rims. > More
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