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View Full Version : yz 250f motor in a yfz 450 frame



burcham400#39
08-14-2007, 06:29 PM
i was wandering if a yz 250f motor would bolt right up to a yfz 450 frame or i f u would have to buy a mounting kit and if u did where would u buy it , also would it be legal to run in the 200-300 class or not