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I'm curious to know if anyone has changed from stock sprocket to a larger/smaller size. What size and why? Pros and cons?

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Final drive ratio (sprocket sizes) can be altered to best match your specific usage (type of riding, terrain)

and also your riding style (lugger/short shifter or, high revver)

 

While less expensive to try, a one tooth change on the front sprocket makes a drastic change,

a one tooth change on the rear sprocket makes a more subtle difference, sometimes 2 tooth count can be too much.

 

link: https://sprocketcalculator.com/

 

The stock sprocket combo was chosen by the manufacturer as the best compromise (acceleration vs top speed)

considering the bike is ridden is it's intended usage, meaning an MX race bike pushed hard on a MX race course.

Edited by mlatour
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Pro's change their gearing all the time to suit different tracks. For example sometimes you'll hit a jump/whoops/corner etc. right at an awkward point, too many rpm in one gear, and not really enough in the next, so you either gear up to bring the rpm down, or down so you can use the next gear. Or you simply run outta rpm in top, so you gear taller so you don't. Or the other way where you're in tricky stuff all the time, and first is too high, so you'd gear down.

It's all a compromise though, so you have to make the choice on what suits YOU best.

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