I went to bigger jets on the 150 and it runs very strong now. From idle to top speed the quad feels and sounds much better than stock. Cold start up is much better now also. I replaced the stock pilot jet, a #35 with a #38 and the stock 105 main jet with a 109. Those are the jets I took out of my 200.

 

what type of mods can be done to my Jet 250. Are there any mufflers from the bug 4 brands that would fit? Also what about getting a better carb for it? I want to do some tyoe of mods to my bike to get better performance but im not sure exactly what can be done to improve on this.

 

You could probably get a universal FMF muffler for it but I cant imagine it would be worth it for power gains. The stock muffler is a decent free flowing muffler. End cap hole could be bigger but thats about it. There is a member here who did some porting and polishing to his 250 head and got a little more power. Biggest limitation with the 250 engine is being a push rod design. Never was made to make big HP, very reliable but not fast. The other thing to consider is the 250 runs fairly hot and will only run hotter as the power output increases.

 

on that note i have 2 ask what quad did that end cap come off MWQ? im intrested in finding one?

 

im very happy for you with having no trouble with them.....ive herd some chinese horror storys and glad you did not have one to tell

 

<div class="FTQUOTE"><begin quote>Originally posted by: jetmotoracer

on that note i have 2 ask what quad did that end cap come off MWQ? im intrested in finding one?</end quote></div>

That is a stock muffler from a '06 Jetmoto 200. (in the pic in this thread)

I put the same thing on my Jetmoto 200 Enduro dirt bike.

 

<div class="FTQUOTE"><begin quote>Originally posted by: bigned1904

im very happy for you with having no trouble with them.....ive herd some chinese horror storys and glad you did not have one to tell</end quote></div>

Thanks bigned1904! [img]i/expressions/face-icon-small-smile.gif[/img]

Jetmoto is one of the best coming from China. Most of the horror stories are from no name ebay and corner lot sales.

 

o... fancey. im guinna have 2 get me one of those

 

heat could cause your brittle plastic problem if you get hot temp. hot then cold and back and forth.

 

Its getting about time for me to change the oil in my Jetmoto's again. 2 years with them now and no real problems to speak of.

The 150's rear end is a little grabby now when your in forward. Sort of like it takes 1/2 a rotation to grab occasionally when taking off from a start. Its still the favorite among the no experience quad riders and gets the most abuse with the least amount of maintainence. I did lube all the cables on all the machines a while ago. The 200's choke cable froze up and after lubing it worked better than new. I decided to lube all the cables and it made all the controls work smoother.

The 150 has been getting a lot of use lately by one of my brothers. My nephew wanted to learn to ride a dirt bike so I put him on my XR75 after a little time learning the basics on the Mini Trail. My bro wanted to follow him around but didnt want to ride a dirt bike. I put him on the 150 of course...Hes now ridden it about 25-30 hours in the last couple of months. He really likes the simplicity of the 150 and now might buy a 08 Jetmoto 150 for him and his wife.