I have just went and had another look at the bike he is referring to on ebay.
It is still a crap bike, But! I bought a black lifan 125 motor of ebay (that looks similar to the yomoto) for my youngest sons 21 after he fried the 110 ducar that was in it. I put the motor in, fired it up and took it for a test ride around my back yard, I give it a short twist of the throttle and thought wow this little motor has a bit of pull.
Thinking that it was just way different to his old 110cc ducar and wouldn't beat his bros agb29, Flogged him. Then I thought that the weight of the 29 compared to the old 21 with this new Lifan in it was what made the difference, but no, My mate bought his son over with his motovert expert and my son absolutely SMOKED him, I **** you not..
My son weighs 10kg more than my mates son as well. I was thinking that this new lifan I bought was just a freak motor, but it differs allot from another mate of mines black lifan.
Everyone that has ridden this bike says it is the quickest thumper they have been on.
Now, having said all that, it is still just a agb-21, with a **** frame, **** suspension, **** swingarm so it only goes quick in a straight line.
As it is the wee hours of the morning I will check the engine numbers later...Some food for thought though...
1 other thing, they sold it as a New Lifan 125 Alloy Sports Engine. here is the link
eBay Australia: NEW 125CC LIFAN ENGINE HONDA THUMPSTAR TRAIL DIRT BIKE (item 320088225564, end time 05-Mar-07 19:00:00 AEDST)