Hello,

I have an old mid-70's Yamaha TY250. I am curious how to tell what year the mototrcycle is.

Thanks for your help.

What colours is it? If you can you post a picture then you would be sure.

Got the following information from various sites. The year can usually be found from the frame number. The first three digits of the frame number identify the type and year.

I can't guarantee that the info is 100% accurate but it's a start.

434 1973/4 TY250A

493 1975 TY250B

525 1975/6 TY250

516 1977/8/9 TY250

59N 1985/6/7 TY 250 Mono

4AJ 1990/1 TY250R Mono

Fo photographs of the various bikes try http://www.ty.motorradklassiker.de/html/des250.html

Dear Daywen

Dating TY twinshock Yamahas is not easy because not all models were sold in all countries.

If you post details of the appearance of your bike and where it was originally sold from, you will probably get some useful feedback about your bike.

Here in sunny Oztraylia we had four 250cc twinshock models. They were called TY250 1974, TY250B 1975, TY250C 1976 and TY250D 1977-1979.

Our TY250 and TY250B both were prefix 434 but were substantially different to each other. Appearance wise, the TY250 was metallic white and yellow. The TY250B was solid white and yellow.

The TY250C and D were substantially different to both the TY250 and TY250B but were the same as each other mechanically, differing only in colour and graphics. The C was white and dark blue while the D was pale blue. The TY250C and D share the prefix 493.

I could go on all night describing the differences but if you have a bit of a surf around all will be revealed about these and a dfiierent model TY250 twinshock that was sold in Europe with a white tank and a red stripe.

Yamaha sold three model TY175s here. The TY175B 1975 and TY175C 1976 were virtually the same apart from the colours and graphics and the TY175JC 1976-1978 was a fully road registerable model that was based on the TY175B/C but with mods to allow it to pass the strict Australian motor vehicle design standards.

David Lahey

Australia

Here's another sight that I believe Ishy has put up here a few times to

help identify bikes.

http://www.ataq.qc.ca/musee.htm

Prefix 525 was TY175 only.............all models

and 451 is TY80

Sorry about that - not too good with this cut and paste thingy

525 is TY175 1975.

As I said I can't guarantee that it is 100% accurate.

Thanks for all your help.

I believe the bike is a 73/74.

Thanks again!