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That is a nice looking bike. I still would have gone for the Honda, but your EXC does have that "Enduro Bike" appeal. I have not seen too many EXC125's around here.... There was an orange one for sale on CL a few months ago (with conventional Marzochi forks). I owned a 1984 125 MXC a long time ago. It was a good quality bike, but once things started wearing out (piston/ring, linkage bearings, etc.) the parts cost quickly overwhelmed me.

gregp wrote:That is a nice looking bike. I still would have gone for the Honda, but your EXC does have that "Enduro Bike" appeal. I have not seen too many EXC125's around here.... There was an orange one for sale on CL a few months ago (with conventional Marzochi forks). I owned a 1984 125 MXC a long time ago. It was a good quality bike, but once things started wearing out (piston/ring, linkage bearings, etc.) the parts cost quickly overwhelmed me.

Thanks, and yeah the piston ring alone was almost $50 and if I needed to replace the piston it would've been almost $170. Seems like aftermarket is the only way to go on this bike, if there's any aftermarket parts for it. I think I read somewhere that there were only 50 of the '94 EXC 125's that were imported. I wish honda or suzuki made 125cc enduro bikes because I really like this one, not to mention all the upgraded stuff it has on it

Wiseco has their Pro-X line of pistons that you can get straight from them for $95.94 or on Ebay I found it for $81.55. I know most Pro-X pistons come with piston, rings, pin, and circlips.

What's the flywheel look like on that thing?

I don't know, i havn't checked yet and probably won't need to. I recently replaced the tail light bulb and light switch so now the lights work. They're nice and bright, the bike also has a voltage regulator

The idea of an enduro 125 is just kind of strange to me. I wonder what they've done to make it enduro worthy... Heavy flywheel, low end porting, etc.

In that era, KTM usually just installed a slightly wider ratio transmission, and a lighting coil. My old 125 MXC had a tiny flywheel, and ran like a 125 MX bike should. Back then, KTM sold MX's, MXC's, and DXC's (desert bikes). IIRC, none of them were considered to be the best in their class. KTM has come a long way since the early/mid '80's. Only now are they getting competition in the "street legal dirt bike" category, with Husaberg (only the 570) and BMW owned Husqvarna getting into the game. The new Beta 400 is supposed to be very nice as well, but I have yet to see one.

I was pretty surprised to see that this little 125cc can lug around without throttle in 2nd gear, unusual for a 125 I'd say. Yet still has an extremely powerful powerband in the high RPM's. The 6-speed transmission is short-ratio, when compared to my '89 KDX. While cruising in 6th gear on the KTM, I'd probably be cruising in low 5th gear on the KDX. But that could be because the KTM has a much larger rear sprocket

My old MXC would run cleanly, and "roll around" at low RPM in 2nd gear, but it would not pull at all at that engine speed. The KDX should run circles around it in that department. Of course, my old MXC had no power valve. The little 125's are fast, though. If the terrain and your ability allow you to keep that little motor singing, it would not be surprising to me if you reported back to us that it is faster than the KDX.
Remember when Jeff Fredette ran a KX80 motor in a KX125 frame in an ISDT? There is a reason for that.... Small motors are super-fun because they are challenging to ride, yet they still pack a punch.

LOL, I never saw that. Too cool. An 80 still makes 18hp.

gregp wrote: Remember when Jeff Fredette ran a KX80 motor in a KX125 frame in an ISDT?

I don't remember it but I know he didn't medal with one!

SS109 wrote:

gregp wrote: Remember when Jeff Fredette ran a KX80 motor in a KX125 frame in an ISDT?

I don't remember it but I know he didn't medal with one!

You don't remember it because it was not Jeff Fredette. It was Larry Roessler in 1989. Fredette switched from Suzuki to Kawasaki in 1982 and has ridden the 200 and 450 since.

skythrasher wrote:

SS109 wrote:

gregp wrote: Remember when Jeff Fredette ran a KX80 motor in a KX125 frame in an ISDT?

I don't remember it but I know he didn't medal with one!

You don't remember it because it was not Jeff Fredette. It was Larry Roessler in 1989. Fredette switched from Suzuki to Kawasaki in 1982 and has ridden the 200 and 450 since.

According to Jeff's website he has also ridden and earned a medal on the following bikes since joining team green.

KDX125
KLX250
KDX220

"You don't remember it because it was not Jeff Fredette. It was Larry Roessler in 1989."

Sorry. I stand corrected.

IIRC - Larry won a Gold Medal on that little 80.

Edit: Confirmed - Larry Roessler http://www.dirtbikemagazine.com/ME2/dir ... 01958083F6