Urban variator

garrett truebenbach /
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I have an 83 urban stock 50cc with pipe and vm20 with a 200 jet and runs great only prob is with the stock belt but it only does like 33 on a flat and I think the only reason is the gearing so I bought a 31 belt but take forever to accelerate . I think I need to put lighter wheights in the vario but I don't know how to do that where to get them or wich ones I need / fit on it

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