Stock 350X tires are 22 inch. The Cheetah tires, while a very nice tire, and stock looking, are the wrong size (20") for a 350X.. A good alternative, although now discontinued in the United States and Canada, are stock 300EX (and 250EX) rear tires. They still might be available in Aussieland if you call your local Honda dealer. They are almost identical to a stock 350X tire.
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