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Top end rebuild for 05 crf250r

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I'm fixing to rebuild my top end (piston,rings,valves,springs ect) and I was wanting some advise on what types and brands of parts I should put in. I was thinking about going with Wiseco piston and kibblewhite valves and springs. I ride motocross and I'm about to start racing.

Edited by ardracing
Miss spelling

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08 piston, kibblewhite exhaust valves, oem intake valves, berillium intake seats, kibblewhite springs and guides. Find an 08 cam while your at it and throw that in there.

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Call Ron Hamp and get his valves and springs for the intakes at a min. You can run the stock OEM ex valves but get the 08 OEM springs for the exhaust valves. I agree with the 08 OEM cam - much better then the 05 one. Much better than a Hot Cam as well (not sure about their gold series). Put in the 08 piston and you'll notice a significant gain in power and ridability.

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08 piston is a higher compression piston and the 08 cam is arguably the best cam for the buck you can purchase. Yes you can keep the 05 head.

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Ok well probably goin with either 08 oem or wiseco high compression piston13.5:1 and Ron Hamp valve and springs kit and a 08 cam. Thanks for the help any other comments or suggestions welcomed.

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change the cam chain tensioner while your doing that. Cheap insurance.

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