Spider bike engine ?

Sounds like a 110cc, 107cc in real life. You could get a 125cc kit, 114cc real size, rebuild cylinder & piston kit for as little as $75 online, try morethanhundreds on eBay, MBPN, minibikepartsnow online. I got mine there for $50 and $25 S/H about a year ago. Has a higher compression piston than stock, comes with gaskets and all. If you going to rebuild might as well go bigger it's the same price. Can't go any bigger with that engine, the new 125cc-160cc are a bigger engine. Also found a new head for $36 to my door on eBay, complete, w/ valves, rockers and all.

I have the same bike and the question it would be awesome to think that I could buy any four stroke big bore kit but that seems hard to believe, if we're to post pictures would anyone be able to identify what brand it is?

most definitely will. there are big bore kits and even whole upgrade motors you can swap in. GL with your project.

Steelfreak said:

I have the same bike and the question it would be awesome to think that I could buy any four stroke big bore kit but that seems hard to believe, if we're to post pictures would anyone be able to identify what brand it is?

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Dont waste the time or money in a BBK especially when the engine has time on it...Its more economical and cheaper in the long run to get a 125-140cc engine off ebay and throwing it in...

The only times when BBK's are needed would be in a racing environment where the class is limited to a 110cc bottomend....Bigbore kits allow loopholes in the rules............A BBK will cost ya in upwards of $300-400 with everything needed to do the job then theres carb and exhaust thats needed too.........Most 125-140cc pitbike engine kits range from $249-$450.....