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Which is the best 13:1 replacement.


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It's hard to beat oem. You could use a 2015 piston. They are 13 8 :1 now oem.

OEM for 15 is 12.8:1

Anyone used the JE Pro series piston.

I've used the JE pro series 14:1 in my quad and had great luck with it. I'm a big fan of JE and CP pistons. I run the CP in the bike.

Edited by duhameister
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I end up fitting a JE pro series 13.5:1 today, will run itin tomorrow morning then se howit goes in the afternoon.

What is the best running procedure.

You running higher octane fuel with that? I'd run at least 95 octane with that piston BTW.

 

Running procedure? (opinion) Don't let it idle, slowly take up and down the gears using the engine to slow the bike down. Do this for about 2x 10min  heat cycles and keep the R's about midway. After that, I let it rip.

Edited by duhameister
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