Back in 1987, Yamaha wanted to test a two-wheel drive motocross bike and this very special YZ490 was born.
Using all mechanical components specially made in England, the bike was tried and tested, then eventually went into a private collection.
We got our hands on this unique 34-year-old air-cooled YZ to see how it works, and put it through its paces in its natural environment - on the mud and on slippery hills.
Негізгі бет Yamaha YZ490 two-stroke 2-wheel drive: Testing the forgotten prototype
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