ninjette.org - View Single Post - Comparing the 250 & 300 motor/engine (Version 2)

Mohawk · July 18th, 2020, 02:05 PM

So some more digging & the bare piston weight of the spears 13/1 is 135grams.
I'm going to go with ZZR600 64mm big bore for 315cc. These pistons complete are 169grams, with a little work I can get them to down to 165grams, so 8grams heavier than stock but should be fine. Will give 12/1 compression.

July 18th, 2020, 02:05 PM	#147
Mohawk ninjette.org guru Name: Chris Location: Bristol, UK Join Date: Feb 2016 Motorcycle(s): ZZR250, VFR800 Posts: 478	So some more digging & the bare piston weight of the spears 13/1 is 135grams. I'm going to go with ZZR600 64mm big bore for 315cc. These pistons complete are 169grams, with a little work I can get them to down to 165grams, so 8grams heavier than stock but should be fine. Will give 12/1 compression.