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honda965
10-26-2006, 02:43 PM
well, i think mine are shot. what do they really do? what type should i get&size. 300ex....2003
gotwarrior
10-27-2006, 11:51 AM
If you need a new pistion get a 11:1
slade
10-27-2006, 04:35 PM
Wiseco 10.5 to 1. You can still run pump gas.
Sjorge450R
10-27-2006, 06:42 PM
Originally posted by slade
Wiseco 10.5 to 1. You can still run pump gas.

dont make them for the 300ex.

The 11:1 is fine on pump gas. I did it all season long. I have a .02 over that was in my motor for a year, you can have it if you want, just pay for shipping. Piston is fine, just needs cleaned and new rings.
10-27-2006, 06:54 PM
If you dont know what pistons do then how would you know if they are shot? :huh


o and a 300ex is a single cylinder ;)