Can someone tell me which this head code " 11111-88380 Yamaha " is off. Is it a gen 1, 2, 3, or 4 3sgte. I would presume that all the ones at the start would make it a gen one head.
All the ones at the start just mean "twincam engine head", which is common with the 2T-G/ 18R-G heads. The important numbers are the last three, 380. Sorry, I don't know anymore.