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JE Piston

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Do the JE High Comp pistons only have one compression ring as compared to the two on the stocker? I want to get a JE, but I'm a little concerned about one less ring. Any thoughts? I have an 07 CRR450.

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Your stock piston has only one compression ring just as the J&E piston does.Perhaps you thought of the Yamaha piston which has two compression rings.but in my opinion lasts no longer or contains compression any better.

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Thanks for the info. My last bike was a Yamaha; guess I just assumed all bikes had two rings as I have not pulled the CRF apart yet. Thanks for the response though.

Most guys say they run pump gas with the 13.5:1 JE. I plan on using a stage 2 hotcam also. Have you had good luck with pump gas at that compression, or do you run 100 octane or more?

E

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I run the piston that you ask about with a oem 02 cam in an 06 and pump preminum works well w/no ping.

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I run the piston that you ask about with a oem 02 cam in an 06 and pump preminum works well w/no ping.

With your configuration how would you say it runs compared to a stock '06?

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