Stock gearing is 39 rear, 16 front.
Changing to a larger rear
sprocket, or a smaller front sprocket will make the bike quicker therefore making it feel like it has more torque. The
easier and cheaper solution is to change the front sprocket (counter sprocket ). 1 tooth less on the front sprocket is roughly
equal to 3 more on the rear. Putting a smaller sprocket on front is quicker since it only has a circlip holding it on. And
you won't need a longer chain, which might be needed if the rear sprocket is too big. They cost less than rear sprockets too,
roughly $12 for front and 3x that for rears, give or take. Change stock front to a 15t. for quicker accelerations but you
will lose some top end and the bike will rev higher at a given speed (most noticable at highway speeds). Too small on
the front sprocket though and your chain will bind up-bad, very bad.
This will not affect your speedo reading but will affect the engine RPM at a given speed; drop a tooth front or rear
and your engine speed will increase for a given speed, so you'll lose a little top end as a result.
This will affect your gas mileage.
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