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K'hermiit · 01-18-2024, 06:02 AM

They are a 72mm bore I think. Another option would be to swap in a PR300 engine. Same bottom end, but already has the bigger piston(75mm) and some versions have a 4 valve head. Might even be cheaper...

01-18-2024, 06:02 AM	#6
K'hermiit Join Date: Nov 2023 Location: Central Arizona Posts: 66	They are a 72mm bore I think. Another option would be to swap in a PR300 engine. Same bottom end, but already has the bigger piston(75mm) and some versions have a 4 valve head. Might even be cheaper...
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