What does changing the sprockets in a bike exactly do?? How does it better performance?? Does it have a huge negative effect on efficiency?? How much would it cost??
My mech when asked to put a K&N told me that changing the sprockets would be a better option for performance.. I have a gladi guys... I know not a powerful bike in the first place to modify... But well i want to do watever possible to increase the performance of the bike as i cannot afford to buy any other bike now
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... So how does this work... I mean what kind of sprocket does what??

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