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New bike????

Joined
Oct 14, 2006
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#1
OK so i need a new bike. i've been need one for a while. I'm about 5'8 weigh about 147 pounds. i mostly do riding at a track. I consider my self aggressive because i started riding about 6 months ago on a 03' KX 85 and can keep up with some C class riders. I also have a 98' KX 250. the 250 i've neglected to ride bcus of a problem with the back rim so i'm gonna sell it to my uncle to make room for a 125. (he does know about the rim problem) the only reason i'm keeping the 85 is i'm in the middle of a series and want to finish it. any way. i found an 02 KX 125 being sold for 1,500. the bike runs nice, just cuts off if it idles. doesn't sound like a major problem to me. the guy says that he had the bike sent out to ProCircut. and they say the bike needs to run 100 octaine or at least 50/50 with high level oil. the problem with that is their aren't too many places that sell 100 octane gas in my town. other that set back, he is putting in two complete plastic kits(all sides) and a complete sprocket and chain kit, and another with just the two sprockets.

so any ideas of what i should do? i mean this is just the first bike i've looked at. should i go buy this one? try to find another deal on a bike?

any help appreciated
 
Joined
Apr 18, 2006
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#3
It sounds like the engine was modified to increase its compression ratio, which does increase horsepower but it also requires a higher octane gas. You can buy racing gas (such as VP fuels) from the local bike shop, or you can go to the local general aviation airport (the small, private planes) and buy some aviation gas which is 100 octane or more.

If you are serious about racing then it is probably a reasonable bike. Just remember that the performance modifications come with a price: Higher gas costs, harder to start, and more likely to seize. It will make the bike faster though.

Rod
 
Joined
Nov 27, 2006
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#4
if i were you i would just look for a different bike. a modded bike like he said above would not be so good for your first 125. i would just look for a stock one so you can get used to that. you will save on gas and other prices if you go the stock route. you should be able to find plenty of 125 2t's for sale
 
Joined
Jan 3, 2007
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#5
headshot347, if you do not want to run 100 octane you could double up the head gaskets. This would make the compression go down and make it so you wouldent have to use high octane fule.
 
Joined
Oct 14, 2006
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#6
ya i heard that from the guy. well i ended up getting the bike today anyway. the bike rides really nice. plus i got alot more parts than i thought i would. about 300-400 in parts. <a href="http://photobucket.com" target="_blank"><img src="http://i62.photobucket.com/albums/h89/headshot347/DSCN0347.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>
I'll get a better picture up tomorrow. my dads lexus was in the way