ive heard that yamaha is coming out with a 600cc
atv racer but that is just going around as a saying but is it true?

I would have to say know. I think this because where are they getting the engine from?Maybe they'll come out with the YZ400F quad. Honda may come out with a 600EX. Suzuki may come out with a LT400 high-performance 4-stroke. Polaris might come out with a 500 2-stroke. Kawaskai might come out with a 400 high performance sport quad and 250 2-stroke. this is mostly all hopes and dreams mixed in with rumors and stuff though.

Well, Yamaha could use their XT600 dirtbike, or their WR400F engine. Kawasaki should use their KLX650 engine.
Honda would use their all new Liquid Cooled XR650R engine instead of the old XR600R engine. Suzuki would have to use their new DR400 engine because they dont have any bigger dirtbike engines, But suzuki does make alot of twin and 3cylinder 2-stroke engines for arctic cat snowmobiles.

I have heard that Yammy has put a YZ400F motor in a quad frame and has been working on the project for a year now. And all I have heard is that they have been having major problems with it. I could be wrong, just what i heard.
Justin Tollefson 99'400EX