KX 125's - 78 & 79

[GMC]

How different are the 78 & 79 KX 125’s?
In relation to the chambers & mufflers
According to Zedder the mufflers are the same but I was bit surprised to see that the muffler also fits the KX 250.

Part # = 18001-1017-21
Part Description = MUFFLER ASSEMBLY,FLAT BLACK
Model Count = 3
KX125-A4 78 125 KX125 MOTOCROSS
KX125-A5 79 125 KX125 MOTOCROSS
KX250-A4 78 250 KX250 MOTOCROSS

Does any one know if the actual chambers are interchangeable or are there some differences in fitment.

It appears that the cylinders & heads are the same but not much else

[Davey Crocket]

I have a 78 and 79 pipe homo....they do look the same, can send if you want....wheres me pipes?

[GMC]

That Homo comment would have added another week to your order, unfortunately they all went out in the mail on Tuesday.

Thanks but I don’t need a pipe, it’s just that I have access to a 78 KX 125.
I don’t think its worth while jigging for the 78 as they are more of a collectable, anyone rebuilding one would want a stock pipe. But then I got thinking about whether the same pipe would also fit the 79.
I have been asked a few times about 79 KX 250 pipes and I can’t recall if I have ever had anyone chasing a 79 KX 125 pipe, just wondering if I should take advantage of a situation.

[Hoony]

interesting dilemma. you cn back it in that if you don't 6 mths down the track you wish you did.

i suppose it all comes down to time. how long does it take to jig and how much time can you spare.

[GMC]

Yes Hoony, that is the dilemma.
It can take anything from 2 to 7 days to set up that first pipe and then I may not sell one for 5 years.
But if I let it slip someone will want a pipe the week after it’s gone.
And no spare time and too many projects ahead as it is

[odd1]

I  would be interested in a pipe and muffler for my 79 rough idea on price?
Regards Steve

[GMC]

Standard pricing...
Chamber $ 440.00     -  Export $ 400.00
Muffler $ 209.00        -  Export $ 190.00

Free postage for orders $450.00 or over  (Aust. only)

[odd1]

I will order one but it wont be for a while as I have been on a bit of a spending spree on bikes lately need to save a little

[GMC]

So the big question is if I jig from a 78 will the pipe fit a 79?

[odd1]

I will ask Ken Smith he has a 78 and a 79.

[TM BILL]

Both bikes would benefit from a better pipe Geoff as would the 250s   In 79 Jem Whatley won the British junior champs on a KX 125 A5 and his bike was fitted with an aftermarket ( or more likley factory pipe ) that was much bigger through the guts than standard .

I would be in for a pipe that offers better performance ( like your YZ 125A pipes   )

[odd1]

i have a undamaged standard pipe I could send .

[GMC]

Nah, it's too hard to set up from just a pipe, especially if I'm changing the specs.
I have gotten away with it a couple of times but for the most part there are too many clearance issues to guess them.
Ideally I need a bike to work with and I have an A4 available