Picking a pipe good for my bike

[TinyFennell]

can i pick any pipe within size rang for my pitpro se 125 or do i just have to get another stock one the one on it the previous owner clearly didnt look after the bike or own a shed so need a new only because it makes it look so horrible.

Cheers.

 

[xLOCOx]

whats the inner diameter of the inner on the pipe where it screws up to the head if that makes sense or the outer of the outlet on the head
and what is the bike based off? klx? or crf? or lxr?

 

[Blender]

yeah find out what bend it is first. im pretty sure the 125se's are klx bend anyway. as for the size of your pipe (diametre) it all depends on what your using it for. so if you get a wider exhaust you will have more top end, at the expense of low end. and vise-versa. just remember when buying a new pipe you will also have to re-jet your carburetor to suit. this off course you dont have to do if you buy the same stock pipe.

 

[TinyFennell]

Yeah KLX and diamiters i dont know but im pretty sure there is a guy on here that has the same bike as me and knows a lot about them jsut cant rememebr the guys name. but know its KLX would that help also i want it to be quick in 2nd 3rd

 

[xLOCOx]

the 2nd 3rd yes it may slightly but it could also be a carby thing
so what is the bike like a 125 140 150 160 ........ atomik dhz pitpro ect ect

 

[Blender]

well what rpm are you looking for? low or high? high being power band. if you want more power in 2nd and 3rd I would look at a larger diametre pipe. you'll have to measure your pipes width first to know what diametre your new pipe should be.

 

[zwebx]

the best thing to do is to trailer the bike into the shops..
i dont think a different pipe will affect the power of the motor unless it has a little expansion chamber and is not restrictive...
backpressure is the **** you want to get rid of by any means possible.. thats like putting glue on your bearings making the motor harder to spin... cam grinds is what you want to modify the power

 

[my67xr]

i think this pipe might suit your bike, you would need to compare the bends/angles though

big bore pipe/muffler -
http://www.ebay.com.au/itm/Exhaust-..._Parts_Accessories&hash=item3a7b58becd&_uhb=1

i might be able to get you a new standard diameter pipe too if you want, they cost about $30

 

[TinyFennell]

Its a PitPro SE 17-14 KLX 125. i would like to have more power in 2nd and 3rd if i cant find one ill just get a stock one.

 

[TinyFennell]

well what rpm are you looking for? low or high? high being power band. if you want more power in 2nd and 3rd I would look at a larger diametre pipe. you'll have to measure your pipes width first to know what diametre your new pipe should be.

im not the smartest but can 4 strokes even have powerband

 

[my67xr]

the bigger bore pipe might help de-restrict it a bit.

powerband, yeah the 4 strokes sort of have it.
it is just where the cam makes it's most power.
but it's not as noticeable as a 2 stroke bike.

 

[TinyFennell]

the best thing to do is to trailer the bike into the shops..
i dont think a different pipe will affect the power of the motor unless it has a little expansion chamber and is not restrictive...
backpressure is the **** you want to get rid of by any means possible.. thats like putting glue on your bearings making the motor harder to spin... cam grinds is what you want to modify the power

So how do i go about doing the cam grinds

 

[my67xr]

check out the cams available at tboltusa and akunar,
it changes how much fuel goes into the motor and also at what timing

so they use bigger lift cams at larger durations basically.

http://tboltusa.com/store/pit-bike-engine-parts-lifan-kits-c-51_102.html
http://www.akunar.com/CAMSHAFTS.htm

 

[TinyFennell]

the bigger bore pipe might help de-restrict it a bit.

powerband, yeah the 4 strokes sort of have it.
it is just where the cam makes it's most power.
but it's not as noticeable as a 2 stroke bike.

2 strokes the little barsteds get me on the straights everytime its aiight i take it back on the corners. if i go too big bore wont it sound crap like splattering and sh!t