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Everything Dirt Bike
General Dirt Bike
Sprockets and chains
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<blockquote data-quote="SRAD97750" data-source="post: 160033" data-attributes="member: 425"><p>I don't think the power of a 125 could damage a new steel sprocket. I have run 12 tooth fronts on my 130+HP sportbikes 10K miles without issue. (520 chain conversion)</p><p>I imagine the chain and sprockets were well worn and broke due to age, or a rock could have possibly jammed it. Either way, the size of the sprocket is not what caused the teeth to break.</p><p></p><p>Changing the 'final drive' is a great way to fine tune the way your bike performs. Trial and error is the only way to find what YOU like.</p><p>-BIG DAN<img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif" class="smilie" loading="lazy" alt=":thumb:" title="Thumb :thumb:" data-shortname=":thumb:" /></p></blockquote><p></p>
[QUOTE="SRAD97750, post: 160033, member: 425"] I don't think the power of a 125 could damage a new steel sprocket. I have run 12 tooth fronts on my 130+HP sportbikes 10K miles without issue. (520 chain conversion) I imagine the chain and sprockets were well worn and broke due to age, or a rock could have possibly jammed it. Either way, the size of the sprocket is not what caused the teeth to break. Changing the 'final drive' is a great way to fine tune the way your bike performs. Trial and error is the only way to find what YOU like. -BIG DAN:thumb: [/QUOTE]
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