What year is my trike

[RubberSalt]

While back, i ot a yt125.. I am not wondering, how can I determine the year for it?

The only numbers i found on the steering stem were 3x3 0005553.
I've tried http://decodemyvin.webs.com/ and I'm pretty sure it's not from 2003.

The shift pattern is 1 n 2 3 4 5 and you will ALWAYS hit neutral, is it normal?

It has this style airbox This 1 here found on ebay (http://cgi.ebay.com/ebaymotors/1980-YAMAHA-YT125-YT-125-AIRBOX-AIR-BOX-ATC-_W0QQcmdZViewItemQQhashZitem415243421bQQitemZ28055 3013787QQptZMotorcyclesQ5fPartsQ5fAccessories)
This style of throttle This 1 here found on ebay (http://cgi.ebay.com/ebaymotors/NOS-Yamaha-Throttle-Lever-1980-1981-YT125-8J5-42138-00-_W0QQcmdZViewItemQQhashZitem2ea1801dfaQQitemZ20027 8023674QQptZMotorcyclesQ5fPartsQ5fAccessories)
This style gas tank cover This 1 here found on ebay (http://cgi.ebay.com/ebaymotors/YAMAHA-YT125-YT-125-TRI-MOTO-ATC-GAS-TANK-COVER-_W0QQcmdZViewItemQQhashZitem5888471b46QQitemZ38024 3483462QQptZMotorcyclesQ5fPartsQ5fAccessories)

I know the early 1s have weak clutches, so i wont be modifing it.... much ;)

[MonroeMike]

3x3 0005553 = 1980

[RubberSalt]

unawesome, thanks! lol

now for the modifications... :) I'll probably leave it stock for the kids.. o well.

[fenderbender713]

Hey, if you do decide to do some mods on it, could you make a thread on it, because I also have a 1980 YT125 and I kind of want to know what else I can do to it.

[RubberSalt]

Unfortunately, the 1980s have retarded clutches, they are weaker than the others years, so your limited on how much power you can get out of them reliably.

If i do any work, it will be a custom pipe (anything better than stock) and some port work.

I've already put the 175 carb on it and cut the back of the air box out, as well as a few passages. I need to open the intake boot up. It's got the larger(1983 reeds) on it.

It's still a turd none the less, but if i mod the engine for more power, ill make a thread.

[fenderbender713]

i want a nice pipe too, but i dont know where to find one. i was thinking of finding a silencer off of a 125cc dirt bike and making it fit, but i dont know how that would sound.

[RubberSalt]

Well the silencer wont make it go any faster, the 125 has 1 of the worst pipes I've seen yet on a 2 stroke. You need an expansion chamber to make it go... Now with some welding and modifications(adding 6 inches), a yz125 pipe would fit it. The port work isn't designed to run with that yz pipe.. but ANYTHING will make the 125 faster lol.

I've got a yz125 pipe i considering trying to stick on my 175, with the modifications and what not.

[fenderbender713]

I don't want to put the whole pipe on it, I was thinking of just putting on the silencer part on the end. But if I can find an entire yz pipe, I will try and fit it.

[RubberSalt]

You can find dented pipes all day on ebay, $25 shipped usualy. They aren't to much, and they wont fit without the mods, but they are SOOO close lol

[fenderbender713]

yeah I see parts bikes on CL quite a bit. Do most other 125 cc 2 stroke bikes have similar pipe? Like, would a pipe from a kawasaki bike fit relatively easily with mods? And with the porting being different in the YT125 as compared to a yz125, would anything bad happen to my yt125? just wondering

[RubberSalt]

Most pipes are similar, they just need a longer/ different shaped header pipe. You would have to rejet for the pipe(get a yt carb and rejet). The pipe would need to be 5-8 inches longer than the yz pipe. But when you make a new header, pipe for it, you can stretch it out.

If you want to go this route, i can get the exact numbers you need(or close to)

[fenderbender713]

Yeah I think that would be what I would want to do. And yes, if you have the specifics, I would want them please. I would not have to rejet it if I just used a yz silencer though, would I?