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Guys want to know what is the number of teeth on a rear sprocket for a 2009 scrambler EFI.

I was planning to get one of the colored rear sprocket for my scrambler but wasn't sure how many teeth does the stock one have?

Brit Custs sells rear sprockets from 43-48 teeth.

Question:

1.How many teeths does a stock rear sprocket have?
2.Wanted to know what is the benefit of going lesser teeth compared to stock or more teeth compared to stock?
 

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My '11 has 43 teeth. More teeth = faster acceleration and lower crawling speed without slipping the clutch. Fewer teeth = lower rpm cruise with less noise and vibration and theoretically better gas mileage.

The opposite is true for a front sprocket. One tooth on the front = 2 teeth on the rear.
 
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