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 Gear box unit

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Primary drive -OEM QUALITY- Vespa V50, PV125, ET3, PK50, PK80, PK125 - 27-69 = 2,56

partnumber 3010007

Delivery time: 1-2 days, Express 1 day*
All smallframe engines come with the same gear grading (exception: three-gear and automatic). To achieve a longer transmission ex factory, various primary gears are used. How long and which gear ratio you should use for your vehicle, depends on the displacement and power delivery of the engine. In the larger classes (125cc and larger) it is not necessary to replace the rather long primary of the 125cc model with an even longer one. In this case, the torque increase gained from a racing cylinder is enough to give you a huge bonus in top speed.
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