June 25, 20197 yr Just the same as the TY250 copper gasket, but slightly bigger bore. Not sure if they are still available, but you should be able to open out a 250 gasket with a dremel and a steady hand http://www.yamaha-majesty.com/?product=cylinder-head-gasket
June 25, 20197 yr Author Quote Thanks to you all. Thought there may have been alternative, when opening the gasket up it leaves the sealing area quite narrow.
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