I've got a 2016-18 ZX10R Cylinder Head. Had it repaired/fully rebuild through WIN Racing after a dropped valve over the winter The engine itself has a nick in the cylinder wall from the valve and needs a repair too (probably $1300 repair). I was going to rebuild the engine but opted for a used engine instead. Rebuilding the engine is beyond my skill set and I don't have the energy to mess with it. The lower was built at the beginning of the 23 season and has low miles too. The add is for the head alone, but the engine is available. If you're a serious buyer, I can take pictures for you, but would need to unpack the head. Let's make a deal. PM me.