How does a small sprocket help a bike go faster?

Renee H

New member
my 11 year old son is telling us that he needs a new bike, he wants a Haro?? but we don't want to spend that much on one for him. He has a Mongoose bike, just a standard bike that we bought for him last Christmas. He says he needs a smaller sprocket to go faster? Can anyone help me with this? I have no idea if we can just buy a smaller sprocket and put it on his current bike? And if so, any suggestions on size or what else we would need to do?? Please help!
Or can someone help me explain to him why you would need a smaller sprocket? He doesn't compete, he just rides his bike to school and around the neighborhood!
Or can someone help me explain to him why you would need a smaller sprocket? He doesn't compete, he just rides his bike to school and around the neighborhood!
Or can someone help me explain to him why you would need a smaller sprocket? He doesn't compete, he just rides his bike to school and around the neighborhood!
 
If you saying smaller sprocket must be back wheel. Larger front sprocket would help too. Go to a bike shop they will give you some ideas.
 
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