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Technical / sprocket gearing for cr85

« on: August 18, 2011, 06:38:51 PM »

My son is just getting started in motorcross racing. He is racing on challenge tracks. I am wanting to know what size sprocket gears we should run on the front and rear sprockets. He is 10 years old and weighs about 90 pounds. He is riding in 2nd gear on the turns and 3rd on the jumps. With that being said just wanted to know if anyone had on opinion of what sprockets gears he should be running.