top of the clamps and the shock with 85mm of sag.
The motor is an 84.7cc liquid cooled, reed valve inducted 2 stroke. It has a strong
pull off the bottom, but seems to really shine in the top and mid end. We tested
our bike with stock gearing (14/47) but most of our test riders wanted to try a 48
tooth rear to give it a little help down low. Note: we did bolt on a 48 tooth Renthal
rear sprocket and were very pleased with the result. It is worth mentioning this
bike is without a power valve and in my opinion does not miss it. The 2009 YZ85
has a very strong motor with no real quirks. It is a friendly power band that can fire
to life when the rider so desires. The stock jetting was spot on for our test track
at 2000 ft. The lack of power valve and the case reed induction makes this 85 by
far the easiest bike in the shop to work on. A top end can be done in minutes and
without having completed a semester at MMI.
Out of the crate it sits on Dunlop tires, a 756 rear and 739 front. The rear 756 is
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