Originally Posted by Gojohnnygo.
Not sure about what you need? I'm new to this vintage stuff. I will try to help.
Frame and fork: Steel Tange Infinity double butted tappered tubing. Made in Taiwan-Designed in the USA. I'm not sure about the model.
Cranks, Brakes,Der and Hubs all say SIS.
The front hub has this engaved on it- 87-39 KK?
On the cranks left side 350 170 M. right side ag 350 Shimano made in japan.
It's as 6 speed double.
The seat: like cuda2k seat, it's a vetta Centurion Anatomic.
Thank-you, it helps quite a bit. The hub would appear to be from week 39 of 1987. The 350 designation of the crank would indicate Exage Trail, which was manufactured in 1988. The Vetta saddle indicates it's no later than 1988. All indications point towards a 1988 models.