Recent content by freek.bonte

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    150cc OORacing or 250cc conversion

    Hello everybody, I just bought a Ace with a lot of km on the counter (+17000km) for a small price. I think the engine has had its best time and I would like to do a rebuild. Did any of you allready install the 150cc head from OORacing (together with the 909 tuning kit)? Is it a big improvement...
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