Question about 1999 Aprilia RS 125 Extrema

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Just had complete engine rebuild.but it will not rev over 8000 rpm .when it was first rebuilt.it only done about 13 miles and it ceased.when they stripped it down they found the main bearings had ceased.manifacture fault.replaced .they said that the bore and piston were ok.and the powervalve was working ok.they said it could be the air filter.so ive just ordered a ram air filter.could they have tightend the powervalve down to tight.the bike is a rs 125 aprilla 1999.before it was rebuilt it would do over 90 mph.

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Sounds like the power vavle is in the wrong way round.please leave feedback thanks

Posted on Oct 11, 2009

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