If its a race car your talking about with a Yamaha 1200 or 1250cc motor and 5 speed transmission, they can run about 120 or 125 depending on the rear end gear. but they usually would never get close to this because their either running on a 1/4 or 1/2 mile track. The bigest track I've ever ran mine on is a road course. I cant remember how big it was but we could get up to about 90.
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