I bought a 1991 lt80 for my boy, and I have no idea who makes the pipe that is on there.......photo of it on my bio page.......or will be in moment

 

ok,it's there now, sorry for the poor quality of photo, but it was all I could do to figure out how to get the bad photo on there

 

My best guess by looking at the end is that it may be a CT pipe. Looks identical to ours.
The CT and Trinity look very similar.

If so, that is a decent pipe to compliment a stock motor.
I have a CT pipe on a stock motor and it works great.
We have a Trinity on a modded motor done by Mr. Moore.

Good Luck

 

It's one of:: CT-Trinity-ATV Racing/Hetrick
To figure it out, measure the expansion chamber and just behing the cylinder mount (we'll call this the head pipe).
The CT has a big expansion chamber. The ATV/Hetrick has a .050 bigger head pipe.
I'm sure Quad-4-fun can measure his and tell you which one is which after you measure yours.[img]i/expressions/face-icon-small-smile.gif[/img]