While I had my tank off I figured I'd check the comp. on my '05 YZ250. It checked at 220 psi. Is that a good amount? is it low? I'm not sure what it should be, but the bike sure screams. I bought it in April, used, and I don't know if it's ever had the top end redone. Just wanted to know.

My 2000 YZ250 recently checked 230# with 4.5hours on a compete engine refresh - plated cylinder, top end and bottom end. I'd say 220# is doing fine.

I was just curious. When I put the Gnarly pipe on, the piston and rings looked great.

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