Late 90's YZF750, changed the plugs and air filter this afternoon, oil and filter tomorrow and noticed these 4 pipes under the tanks - all blanked off? 

Assume these are used for balancing?

Any advice/conformation gratefully received, ohhh and Happy New Year to all readers!!

Dunc

Vac pipes I assume

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They look like the Y.I.C.S system balance pipes off of my old XJ?

yeah just remote balance pipes. much needed too. the fzr1000 with the same engine design doesn't have them and it's a pig to get to the spigots.

Ahh, great, many thanks.

At some stage I'll re-balance them.

Best all

D