Just a quick question. Do all Ty 250 twinshocks have the same left side mag cover. ? Some photos that I have seen have a round cover with a center bump like a TY1 75. Other photos show a smooth cover that runs back to cover the counter shaft sprocket. Thanks for your time.

Of the covers made by Yamaha, the 1975 B model and later models had a flat cover with a bump in the middle and covered the sprocket and are made from magnesium and painted silver

The 1973/74 A model has a domed cover that is aluminium with a polished finish and also covers the sprocket.

There are also covers made by specialist UK trials suppliers which are flat with a bump in the middle, don't cover the sprocket and are of much stronger (thicker) construction than the magnesium and aluminium Yamaha covers.

If you want photos of the three types, send me a PM.

Are the after market side covers available still ?