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front sprocket 420 - 14 teeth for Derbi Senda GPR, Aprilia RS RX SX, Gilera RCR, SMT (D50B0)
Low-cost sprockets in various tooth sizes. Chose a taller gear for higher top end, or a shorter gear for improved acceleration. Ratio of 1:2 will achieve optimal results. 14T sprocket...
$4.82
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