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help with stock o2 crf450

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I just got a stock 02 crf 450 and I was wondering if there are any thing that I can do to make it run the best. Jetting?(sea level) Also are the stock pistons know for being noisy, or should I just replace the piston? Any sugustions would be great, as I am new to the hondas, past bike was a yamaha wr400. anything extra needed for supermoto conversion becides the usual?

thanks

motowidow

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I got a used 02 CRF 450 about a year ago. I put a piston in it a short time ago..that's about 3 years on it..and Honda recommends changing at 15hrs. It was an easy job, and everything inside looked great. So I'd say put a new one in and be safe. You might look into using an 04 piston, it has a little more compression.

I also slotted the cam sprocket to advance the cam like the 03 and later models, and it liked it. White Brothers sells a sprocket you can buy.

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