Hi.i have just bought an old ty 80 but have discovered it has 5 gears.the frame number is 451-1101##.does anyone have any idea as to age of bike as the frame number points to a 1970 s bike but I didn't think they were 5 speed at that age.

The engine number is the same number so I know it's not been replaced.any help on its true age/identity would be appreciated.

It's a 1975 TY 80B http://www.yamahaty....sh/serieen.html

Edited January 25, 201412 yr by bilks

Thanks for that Bilks,was told it was early 80's bike but the seller wasnt really sure.Anyone know if its rare at that age to have 5 gears?,also whats the differance between a ty 80 A and a TY 80 B?