YAMAHA HAVE revealed an amusing tongue-in-cheek video, ahead of the launch of their new 2010 YZ450F off-roader.The clip features many of Yamaha's racing greats including Valentino Rossi, Colin Edwards, Jorge Lorenzo and James Stewart.

YAMAHA can be credited with starting the modern era of four-stroke motocrossers and it’s taking its 2014 machines to another level with almost entirely new bikes in both the 250cc and 450cc categories.While the YZ450F carries over last year’s engine

Just as four-strokes are set to turn the world of motorcycle Grand Prix racing on its head, so the four-valves are doing the same in motocross. Forget the 'thumpers' of old - this new generation of four-stroke motocrossers aren't just keeping up with the traditional yowling two-s...

group logged more than 100 man hours on the project which started out using a 2009 Yamaha YZ450F as the base.The group used a specially lightened and polished frame, and put carbon fibre body panels on it alongside a custom fuel tank.Cycra Racing

pointless. Much more interesting was the reverse cylinder YZ450F (carb at the front, pipe at the back) and the resurrection of the 30 year-old SR400 – now with fuel injection and just the same amount of bulb-blowing vibration as it had in 1977. And I know, I

really like to do is ride Supermotard bikes with motocross front tyres and enduro rears, but not on asphalt, only sliding around off road. I do this in the winter for fun but also because it is good training. For this I use a factory YZ450F. We also

is ride Supermotard bikes with motocross front tyres and enduro rears, but not on asphalt, only sliding around off road. I do this in the winter for fun but also because it is good training. For this I use a factory YZ450F. We also still ride mini bikes