Seller notes

State-of-the-art clutch kit allows for greater acceleration and engine torque than stock. Performance-matched drive belts are specifically designed to handle the power supplied by Athenas big bore kits for scooters. Primary gear sets feature a higher gear ratio than stock (22%-33% depending on model) for a higher top-end speed. Clutch weights also available separately in three weights for fine-calibrating clutch engagement. Ratio: 15/50. Percentage: 21% fits YAM YJ50 Vino 2002-2004 *Free to the ...

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