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Motorcycle Sprocket Size/Ratio Calculator


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Yamaha YZ250F (2009)

FrontRearChainLinks
Yamaha YZ250F (2009)1349520112
Select current size of front and rear sprockets
as well as the new sizes.

FRONT REAR LINKS
CURRENT
NEW
FrontRearRatioTorqueSpeed
13T47T3.62 -4.3%+4.3%
13T48T3.69 -2.1%+2.1%
13T49T3.77
13T50T3.85+2.0% -2.0%
13T51T3.92+3.9% -3.9%
13T52T4.00+5.8% -5.8%
13T53T4.08+7.5% -7.5%





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